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Anonymous 1967: Narodnaja. Sadovodstvo (Horticulture), 6, 49 p

Kerbes, E.L. 1969: Narrow kerf, accurate sawing: key to higher lumber recovery. Canad. For. Ind 89(3): 76-9

Marras, F. 1969: Narrow leaf, a new virus disease of Citrus. Studi sassar 17: 302-305

Thomsen, B. 1964: Narrow rows for weed control. Crops Soils 17(3): 11-2

Kljacko, A.B. 1965: Narrow tractors for forestry. Lesn. Hoz 18(3): 66-7

Beczner, L. 1970: Narrow-leaf virus disease of yellow Lupin. Novenyved. Kut. Intez. Kozl 4: 5-18

Wickens, R. 1967: Narrow-row drilling or broadcasting cereal seed. Prog. Rep. exp. Husb. Fms exp. Hon. Stns N.A.A.S 8: 25-8

Harris, D.L.; Switzer, W.P. 1969: Nasal and tracheal resistance of swine against reinfection by Bordetella bronchiseptica. American Journal of Veterinary Research 30(7): 1161-1166

Acheson, E.D.; Cowdell, R.H.; Hadfield, E.; Macbeth, R.G. 1968: Nasal cancer in woodworkers in the furniture industry. British Medical Journal 2(5605): 587-596

Andrade, Z.A.; Paula, L.A.; Sherlock, I.A.; Cheever, A.W. 1967: Nasal granuloma caused by Entomophthora coronata. American Journal of Tropical Medicine and Hygiene 16(1): 31-33

Hore, D.E. 1966: Nasal granuloma in Victorian dairy cattle. Australian Veterinary Journal 42(8): 273-278

Keegan, H.L.; Radke, M.G.; Murphy, D.A. 1970: Nasal leech infestation in man. American Journal of Tropical Medicine and Hygiene 19(6): 1029-1030

Fox, J.G.; Ediger, R.D. 1970: Nasal leech infestation in the rhesus monkey. Laboratory Animal Care 20(6): 1137-1138

Pons, A.R.; Marmol L.; B.P. 1967: Nasal myiasis due to C. hominivorax in a case of American mucocutaneous leishmaniasis. Kasmera. Maracaibo 2(4): 423-431

Willomitzer, J.; Vrba, C.; Asmera, J. 1968: Nase zkusenosti s pouzitim Syngamixu proti syngamoze bantu v podminkach terenni praxe. Veterinarstvi 18(11): 504-506

Ogan, E. 1971: Nasioi land tenure: an extended case study. Oceania. Sydney 42(2): 81-93

Beggs, J.P. 1970: Nassella tussock replaced by high producing pasture. N.Z. Jl Agric 120(1): 37-43

Frowd, J.A.; Tomlinson, J.A. 1970: Nasturtium ringspot virus in Parsley crops in Britain. Pl. Dis. Reptr 54(9): 734-735

Beaver, R.A. 1969: Natality, mortality and contral of the elm bark beetle Scolytus scolytus (F.) (Col., Scolytidae). Bull. ent. Res, 59: pt. 3, 537-540

Beaver, R.A. 1969: Natality, mortality and control of the Elm bark beetle Scolytus scolytus (F.) (Col., Scolytidae). Bull. ent. Res 59(3): 537-40

Nuveldt, W. 1967: Nates on Cecidomyidae, I. Ent. Ber, Amst. 27(1): 8-14

Anonymous 1966: Natick freeze-drying plant is technological showplace. Fd Mf 41(2): 46-47

D.Sutton, G.K., E.Al. 1966: National (Argentinian) olive oil. VI. Influence of botanical variety on chemical composition. Rev. argent. Grasas Aceit 8: 3-12

Egolf, D.R. 1967: National Arboretum releases ten new viburnums. Amer. Nurserym, 125: 3, 16; 46; 48; 50; 52-4; 56

Anonymous 1969: National Centre for Coordination of Nutrition and Food Studies and Research, meeting, June 1968. Progress in vitaminology, 5th series, 1967-1968. Ann. Nutrition Aliment, 23: Al-A95

Echeverri, E.S. 1969: National Centre of Coffee Research. Brief review. Rev. cafet. Colombia 18(145): 53-68

Kerner, A. 1965: National Councils and the control of the national economy. Politicka Ekon, Praha 13(21): 73-81

Anonymous 1965: National Forest Inventory. Departement des Landes. Inventaire forestier national. Departement des Landes, Ministere de l'Agriculture, Direction Generale des Eaux et Forets,Paris, France: 88

Janz, K. 1971: National Forest Survey sheds light on windthrows. Skogen 58(9): 303-5

Romero Alvarez, H. 1964: National Malaria Eradication Commission. Salud publ. Mex, Mexico, D.F. 6(6): 1123-1152

Arora, K.K. 1971: National Parks and sanctuaries of India. A study in tourist geography. Deccan Geographer. Secunderabad 9(1): 31-64

Anonymous 1971: National Parks of Malaysia. Malay. Nat. J, 24: 3/4, 113-262. Price: Malaysian \$8

Duggan, R.E. 1971: National Pesticide Monitoring Program (revised). Pesticides Monitoring Journal 5(1): 35

Anonymous 1969: National poisons information service: fifth annual report for the year ended 31 December 1968. British Medical Journal 3(5667): 408-409

Cati, B.; Carlo, G.D. 1970: National Pulp and Paper Corporation to Poplar growing. Cellulosa e Carta 21(7): 3-13

Wang, T.C.; Jen, I.A. 1968: National Taiwan University forest. Quart. J. Chin. For., Taipei 2(4): 50-7

Gusten, R.; Helmschrott, H. 1965: National accounts in tropical Africa. Volkswirtschaftliche Gesamtrechnung in Tro-pisch-Afrika, Berlin: Springer Verl., xii + 69. Price: DM11

Narasimham, M. 1971: National agricultural credit policy. Econ. Political Wkly, Bombay 6(2): 97-102

Southern, J.H. 1966: National agricultural labor policy considerations. J. Fm Econ, Urbana, Ill. 48(5): 1121-30

Sarma, J.S. 1972: National agricultural surveys. A proposal for an integrated programme of consensuses and current surveys in agriculture (with special reference to the Asia and Far East Region. Monthly Bulletin of Agricultural Economics and Statistics. Rome 21(4): 1-10

Morandini, R. 1969: National and international action for the supply of forest tree seed. Ann. Accad. Ital. Sci. For 18: 353-377

Bublot, G.; Defort, M. 1967: National and world-wide problems of milk and beef markets. Agricultura, Louvain., 2: 77-82

Lindhe, B. 1971: National breeding plans for pigs. Meddn Svensk Husdjurs-skotsel. 47, 71

Anonymous 1969: National cereal breeding and seed propagation centre. Backweston. Leixlip. Co. Kildare. Fm. Bull, Dublin, 2-4

Garlick, N.L. 1965: National considerations in relation to anaplasmosis. Journal of the American Veterinary Medical Association 147(12): 1576-1579

Anon. 1971: National dairy policies of surplus producing countries relaxed. Mon. Bull. agric. Econ. Statist 20(11): 5-12

Mahapatra, I.C. 1969: National demonstration trials. Indian Fmg 19(3): 24-7

Eliasson, S.; Hellbo, E.; Andersson, G. 1965: National descriptive varietal list of agricultural crop varieties which the Committee for Original Seed have declared eligible for state certification as from the season 1964-1965 inclusive. Lantbr-Hogsk. Medd, 4, 94

Anonymous 1970: National development organizations agricultural co-operatives and development. Chambres Agric, Paris, 41: Suppl 435/436, 1-32

Uys, C.J. 1966: National disease patterns in South Africa. South African Medical Journal 40(8): 159-165

Degen, I. 1967: National economic importance of water supply management. Tudom. Mezogazdasag, Budapest 5(4): 1-15

Basu, D. 1970: National farm survey. Mon. Bull, agric. Econ. Statist., Rome. 19(12): 1-7

Barney, R.J. 1969: National fire-danger rating system fine-fuel moisture content tables-an Alaskan adaptation. U.S. For. Serv. Res. Note Pacif. Nthwest. For. Range Exp. Sta, PNW-109, 12

Anonymous 1969: National food survey: household food consumption in the second quarter of 1969. Bd Trade J, London, 3789, 1177-8

Honkanen, A. 1967: National forest fire fighting. Finn. Pap. Timb 18(4): 41-4

Anonymous 1969: National forest survey. Inventario forestal nacional; Logrono (26), Direccion General de Montes, Caza y Pesca Fluvial,Madrid, Spain: 84

Mutch, W.E.S. 1967: National forestry finance in Britain: a criticism of present policy. Scot. For 21(4): 239-44

Anonymous 1964: National forestry programme. Mex. Bosques, Mexico 2(9): 11-23

Pitcher, J.A. 1970: National forests: recent tree improvement developments. Proceedings of the ninth Lake States forest tree improvement conference, Minnesota, 22-23 August, St. Paul, USA, USDA For. Serv., 6-7

Anonymous 1965: National index of agricultural field experiments, 1954-59. New Delhi: Indian Coun. Agric. Res, 15: 9164

Salzman, P.C. 1971: National integration of the tribes in modern Iran. Middle East Journal. Washington, DC 25(3): 325-336

Anonymous 1971: National milk records. Report for the year ended September 1970. Rep. Natn. Milk Rec, 7-14; 22-29

Anonymous 1964: National milk records. Report for the year ended September, 1965. A. Rep. natn. Milk Rec 1-23; 26-47

Anonymous 1967: National milk records. Report for the year ended September, 1966. A. Rep. natn. Milk Rec, Thames Ditton, Surrey, England, : 1-27; 30-34

Anonymous 1970: National milk records. Report for the year ended September, 1969. Rep. Natn. Milk Rec, 7-15; 22-29

Herrero Halcon, A. 1966: National network of agrarian economic-accounting information. Revta Estud. agro-sociales, Madrid 57: 7-28

Grainger, J. 1965: National opportunity for crop protection. PANS 11(4): 439-456

Corti, R. 1968: National parks and forest reserves in the framework of nature conservation in Tuscany. Ital. for. mont 23(5): 205-20

Wielgolaski, F.E. 1971: National parks and other protected areas in North America in relation to those in Norway and Sweden. Biol. Conserv 3(4): 265-92. 13 ref

D.Juana Sardon, A. 1970: National pig census. Avances Aliment. Mejora anim 11: 1015-1019

Anonymous 1967: National policy for control of bovine mastitis. Australian Veterinary Journal 43(2): 65-68

Anonymous 1968: National raising of chinchillas. An. Soc. rur. argent, 102: 11/12, 33-36

Ivanov, I.; Zankov, Z.; Valcev, V. 1968: National report from Bulgaria. Twelfth International Congress on the Vine and Wine. Vol. 1, Viticulture: Bucharest 1: 169-82

Negreamt, E.; Lepadatu, V.; Oslobeanu, M. 1968: National report from Rumania. Twelfth International Congress on the Vine and Wine. Vol. 1, Viticulture: Bucharest 1: 183-200

Harroy, J.-P. 1971: National resources and land reforms: Ressources nationales et reformes agraires. Civilisations, Bruxelles 20(4): 452-72

Krishna Kanta Modak 1969: National seminar on zoonoses in India. An observation on plague in Calcutta. Bull. Indian Soc. Malar, commun. Dis, Delhi 5: 3-4, 139-354; 246-252

Kalra, N.L.; Wattal, B.L.; Raghavan, N.G.S. 1969: National seminar on zoonoses in India. Distribution pattern of Aedes (Stegomyia) aegypti in India-some ecological considerations. Bull. Indian Soc. Malar, commun. Dis 5: 139-354; 307-334

Dhir, S.L.; Rao, V.N.; Krishnan, K.S. 1969: National seminar on zoonoses in India. Investigation on persistent malaria in Palghar Unit, Maharashtra State. Bull. Indian Soc. Malar, commun. Dis 5: 139-354; 335-346

Satya Prakash 1969: National seminar on zoonoses in India. Malaria as a zoonosis. Bull. Indian Soc. Malar, commun. Dis 5: 3-4, 139-354; 280-284

Cann, K. 1970: National summary: Marketing boards in Canada 1968. Bull. Dep. Agric. Can. econ. Brch. 70/2: 9

Fourquie, M. 1971: National synthesis of the 1962 farm situation. Development from 1959 to 1969. Economie Rumie. Paris 89(3): 25-38

Woodford, E.K.; Morrison, J. 1971: National use of grassland. Ann. appl. Biol 67(2): 278-85

Cliffe, L.R. 1970: Nationalism and the reaction to enforced agricultural change in Tanzania during the Colonial period. Taamuli. Dar-es-Salaam 1(1): 3-15

Singh, B. 1970: Nationalization of forest production in Rajasthan. Indian For 96(11): 841-2

Kagei, N.; Oshima, T. 1968: Nationwide epidemiological surveys on the metacercariae of Metagonimus yokogawai in 'Ayu', Plecoglossus altivelis, in Japan. Jap. J. Parasit 17(6): 461-170

Follermann, E.V. 1968: Native. Bol. argent. for 27(269): 11-2

Stephens, S.G. 1964: Native Hawaiian cotton (Gossypium tomentosum Nutt.). Pacific Sci 18(4): 385-98

Luscombe, E.G.B. 1969: Native North American irises. 1. Gdnrs' Chron 165(20): 17-20

Puchalski, T. 1966: Native Picea abies in the upper forest zone of Pilsko mountain: stand structure, and diameter increment and late-wood % in the trees. Sylwan 110(12): 1-23

Cozzo, S.A. 1972: Native and exotic Argentine woods with conspicuous 'mottled' figure. Rev. for. argent 16(1): 19-22

Galle, F.C. 1967: Native and some introduced azaleas for southern gardens-kinds and culture. Amer. hort. Mag 46: 13-24

Santo, F.Doe. 1969: Native and vernacular names of some plants of Sao Tome and Principe. Bolm cult. Guine port 24(93): 193-211

White, K.L. 1967: Native bunchgrass (Stipa pulchra) on Hastings Reservation, California. Ecology 48(6): 949-55

El-Said, F.; Fadulu, S.O.; Kuye, J.O.; Sofowora, E.A. 1971: Native cures in Nigeria, II. The antimicrobial properties of the buffered extracts of chewing sticks. Lloydia 34(1): 172-174

Miller, M.P. 1967: Native fire ant control. Calif. Citrogr, 52: 468

Mikami, D.T.; Kanehiro, Y. 1968: Native fixed ammonium in Hawaiian soils. Proc. Soil Sci. Soc. Am 32: 481-485

Vargas C.; C. 1967: Native forage plants. Biota 6(52): 335-55

Thompson, W.W.; Gartner, F.R. 1971: Native forage response to clearing low quality ponderosa pine. Journal of Range Management 24(4): 272-277

Van Der Sluijs, D.H. 1971: Native grasslands of the Mesopotamia region of Argentina. Netherlands Journal of Agricultural Science 19(1): 3-22

Goldschmidt, E.E.; Monselise, S.P. 1968: Native growth inhibitors from citrus shoots. Partition, bioassay, and characterization. Plant Physiology 43(1): 113-116

Tripathi, B.R.; Tandon, H.L.S.; Tyner, E.H. 1970: Native inorganic phosphorus forms and their relation to some chemical indices of phosphate availability for soils of Agra district, India. Soil Sci 109: 93-101

Laberge, W.E.; Isakson, O.W.; Kehr, W.R. 1965: Native insects as pollinators of caged alfalfa clones and seedling performance of the progeny. J Econ Entomol 58(1): 63-66

Rios-Castano, D.; Camacho Bustos, S. 1969: Native mandarins in Colombia. Agric. trop, Bogota 25: 456-65

Rios Castano, D. 1967: Native oranges in Colombia. Rev. Inst. colomb. agropec 11(4): 37-51

Folkner, J.S.; Charles, R. 1964: Native trees and shrubs for landscape use in southern Arizona. Amer. hort. Mag 43: 43-9

Klein, R.M. 1966: Native trees suitable for afforestation in southern Brazil. Sellowia, Itajai. 18(18): 29-39

Lindsey, J.R.; Melby, E.C. 1966: Naturally occurring primary cutaneous tuberculosis in the rhesus monkey. Laboratory Animal Care 16(4): 369-385

Garms, R.; Weyer, F. 1968: Natur-liche Infektion von Simulium damnosum mit Onchocerca volvulus in Savannengebieten Guineas. Z. Tropenmed. Parasit 19(3): 289-296

Majorana, G. 1966: Natural ' infectious variegation' infection on Mandarin. Preliminary note. Phytopath. Mediterranea 5(3): 185-187

Wiles, M. 1970: Natural British infestations of Diplozoon paradoxum Nordmann, 1832 (Trematoda: Monogenea) with respect to levels of infestation, size of the host, and condition of the host's blood. Can. J. Zool 48(1): 69-73

Szyfres, B.; González Tomé, J. 1966: Natural Brucella infection in Argentine wild foxes. Bulletin of the World Health Organization 34(6): 919-923

Quacquarelli, A. 1967: Natural Cucumber mosaic virus infections on D. stramonium. Phytopath. Mediterranea 6(3): 170-172

Lussier, G.; Loew, J.M. 1970: Natural Hymenolepis nana infection in Mongolian gerbils, (Meriones unguiculatus). Can. vet. J 11(5): 105-107

Buonaccorsi, A. 1968: Natural Leptospira icterohaemorrhagiae infection in dogs. I. Determination of serum enzyme activity. Annali Fac. Med. vet. Pisa. 20: 239-247

Anonymous 1969: Natural Rubber Conference, Kuala Lumpur, 28 August-5 September, 1969. World Crops 21(1): 69-76

Teder, H. 1969: Natural Spruce regeneration and the results of planting Spruce on a drained Filipendula ulmaria site type in Orajoe forest district. Metsanduse Tead. Uurim. Lab. Metsandusl. Uurim 7: 66-79

Mohamed, Y.S.; Moorhead, P.D.; Bohl, E.H. 1969: Natural streptobacillus moniliformis infection of turkeys, and attempts to infect turkeys, sheep, and pigs. Avian Diseases 13(2): 379-385

Carter, G.R.; Whitenack, D.L.; Julius, L.A. 1969: Natural Tyzzer's disease in Mongolian gerbils (Meriones unguiculatus). Lab. Anim. Care. 19: 648-651

Fakirov, V.; Canov, C. 1967: Natural Willow stands along the Danube. Gorskostop. Nauka, Sofija 4(3): 21-32

Bentley, R.K., E.Al. 1968: Natural acetylenes. Part XXVIII. C17-Poly-acetylenic alcohols from the umbellifer Daucus carota L. (carrot): alkylation of benzene by acetylenyl(vinyl)carbinols in the presence of toluene-p-sulphonic acid. J. chem. Soc., Lond, 4, 685-8

Longenecker, B.M.; Breitenbach, R.P.; Congdon, L.L.; Farmer, J.N. 1969: Natural and acquired antibodies to Plasmodium lophurae in intact and bursaless chickens. I. Agglutination and passive immunity studies. Journal of Parasitology 55(2): 418-425

Congdon, L.L.; Farmer, J.N.; Longenecker, B.M.; Breitenbach, R.P. 1969: Natural and acquired antibodies to Plasmodium lophurae in intact and bursaless chickens. II. Immunofluorescent studies. Journal of Parasitology 55(4): 817-824

Harvey, B.L.; Knowles, P.F. 1965: Natural and artificial alloploids with 22 pairs of chromosomes in the genus Carthamus (Compositae). Canad. J. Genet. Cyt 7: 126-39

Harvey, B.L. 1966: Natural and artificial alloploids with 22 pairs of chromosomes in the genus Carthamus L. Dissertation Abstracts 27: 365

Bogle, A.L. 1966: Natural and artificial hybridization between palmate- and sagittate-leaved species of Petasites. Amer. J. Bot, 53: 636

Alconero, R. 1968: Natural and artificial infection of vanilla roots by Fusarium oxysporum f. sp. vanillae and Rhizoc-tonia spp. Phytopathology 58: 553

Minickwitz, H.V. 1969: Natural and artificial regeneration in the northwest parts of the Thuringer Wald up to the middle of the 19th century. Arch. Forstw 18(2): 179-89

Mergen, F.; Stairs, G.R.; Snyder, E.B. 1965: Natural and controlled loblolly x shortleaf pine hybrids in Mississippi. Forest Sci 11(3): 306-314

Cadantu, L.; Hornoiu, M.; Geamanu, N.; Timariu, S.; Hustiu, C.; Rimba, M.; Petcu, D.; Meier, R.; Vescu, E. 1965: Natural and cultivated pastures for ruminants. Lucr. Stiint. Inst. Cercet. Zooteh., Bucharest. 22: 121-138

Teaci, D. 1966: Natural and ecological criteria for the economic evaluation of agricultural land. Stunta Solului 4(1): 52-65

Dmitriev, V. 1967: Natural and economic soil fertility and means of increasing it. Ekon. sel'. Hoz, Moskva 43(11): 64-74

Steubing, L. 1971: Natural and emission-induced occurrence of benzo(a)pyrene. Ange-wandte Botanik 45(1/2): 1-10

Viallier, J.; Casanova, F.; Lanery, R. 1965: Natural and experimental contamination of laboratory animals with mycobacteria other than Myco-bacterium tuberculosis. Annls. Inst. Pasteur, Paris 108: 384-391

Ball, R.A.; Sautter, J.H.; Pomeroy, B.S.; Waibel, P.E. 1965: Natural and Experimental Dissecting Aneurysms in Turkeys. Journal of Pathology and Bacteriology 89: 599-606

Smyth, J.D.; Smyth, M.M. 1964: Natural and Experimental Hosts of Echinococcus Granulosus and E. Multilocularis, with Comments on the Genetics of Speciation in the Genus Echinococcus. Parasitology 54: 493-514

Wit, F. 1964: Natural and experimental hybrids of ryegrasses and meadow fescue. Euphytica, Wageningen. 13: 294-304

Frazier, N.W. 1966: Natural and experimental infection of Rubus with Strawberry necrotic shock virus. Phytopathology 56(5): 568-569

Piper, R.C.; Cole, C.R.; Shadduck, J.A. 1970: Natural and experimental ocular toxoplasmosis in animals. American Journal of Ophthalmology 69(4): 662-668

De Bortoli, M.C.; Gaglione, P. 1969: Natural and fallout radioactivity in the soil. Health Physics 17(5): 701-710

Scott, B.I.H.; Gulline, H.F. 1972: Natural and forced circadian oscillations in the leaf of Trifolium repens. Australian Journal of Biological Sciences 25(1): 61-76

Fayret, J. 1967: Natural and in vitro biological cycle of G. leptostyla. C.r. hebd. Seanc. Acad. Sci., Paris, Ser. D. 265(13): 908-911

Bradford, G.E.; Quirke, J.F.; Hart, R. 1971: Natural and induced ovulation rate of Finnish Landrace and other breeds of sheep. Anim. Prod 13: 627-635

Maksimova, R.A. 1966: Natural and induced variability of the trichothecin-producing str. Sel'.-khoz. Biol 1(2): 280-284

Buzzell, R.I.; Haas, J.H. 1972: Natural and mass selection estimates of relative fitness for the soybean rps gene. Crop Science 12(1): 75-76

Crkva, F. 1971: Natural and soil conditions in the system of financing (Czechoslovak) agricultural enterprises. Finance Uver. Praha 21(7): 445-450

Dewey, D.R. 1964: Natural and synthetic hybrids of Agropyron spicatum x Sitanion hystrix. Bull Torrey Bot Club 91(5): 396-405

Ratusky, J.; Slama, K.; Sorm, F. 1969: Natural and synthetic materials with insect hormone activity-VI. Juvenile hormone effects of some alkyl-ethers derived from aliphatic beta -hydroxy acids. J. stored Prod. Res 5(2): 111-117

Nĕmec, V.; Jarolím, V.; Hejno, K.; Sorm, F. 1970: Natural and synthetic materials with insect hormone activity. 7. Juvenile activity of the farnesane-type compounds on Locusta migratoria L and Schistocerca gregaria (Forsk). Life Sciences. Pt. 2: Biochemistry General and Molecular Biology 9(14): 821-831

Masner, P.; Sláma, K.; Zdárek, J.; Landa, V. 1970: Natural and synthetic materials with insect hormone activity. X. A method of sexually spread insect sterility. Journal of Economic Entomology 63(3): 706-710

Knypl, J.S. 1967: Natural and synthetic regulators of growth and development of Plants. B. Growth retardants. 2. 1,1-dimethyl hydra-zides of succinic and maleic acids. Postepy Nauk roln 14(5): 73-94

Lebedev, V.N.; Strelyaeva, V.M. 1969: Natural anthrax infection of Muridae. Zh.Mikrobiol. Epidem. Immunobiol, 1, 137-140

Bourne, F.J.; Honour, J.W.; Pickup, J. 1971: Natural antibodies to Escherichia coli in the pig. Immunology 20(3): 433-436

Ercegovac, D.; Pima-Kostoglou, M. 1968: Natural antibodies to rabies virus. Delt. hellen. kten. Hetair 19: 146-151

Faine, S.; Carter, J.N. 1968: Natural antibody in mammalian serum reacting with an antigen in some leptospires. Journal of Bacteriology 95(2): 280-285

Bigot, M.C. 1967: Natural aptitudes of some Begonia rex varieties to form buds and roots. C.R. Acad. Agric. Fr 53: 1005-10

Eichhorn, O. 1969: Natural area of distribution and regions of introduction of the silver-fir woolly aphids (genus Adelges) and the possibilities of their biological control. Z. angew. Ent, 63: pt. 2, 113-131

Witkowski, K.J. 1964: Natural bases of adaptation to the region for winter rape cultivation in Poland. Pam. Pulawski. 15, 3-53

Szyfres, B.; Tome, J.G. 1967: Natural Brucella infection of wild foxes in Argentina. Boletin de la Oficina Sanitaria Panamericana. Pan American Sanitary Bureau 62(2): 144-150

Avakjan, D.O.; Avakyan, D.H. ] Babajan, V.O.; Babayan, V.H. ]. 1967: Natural cell mutation in wheat seeds differing in embryonic age. Hayasdani Kensabanakan Handes (Armen, biol. J.), 20: 15

Albrecht, F.O. 1964: Natural changes in grass zonations in a red locust outbreak centre in the Rukwa Valley, Tanganyika. S. Afr. J. agric. Sci, Pretoria. 7(1): 123-129

J.T.Martin. 1968: Natural chemical protection in plants. Proceedings of the Fourth British Insecticide and Fungicide Conference (Brighton, 20th-23rd November 1967). 1968. 557-561

Gordienko, I.I. 1964: Natural colonization of bare sands by vegetation and their. Bot. Z, 49: 12, 1750-9

Koch, J.; Sajar, E. 1965: Natural colouring matters in citrus fruits. II. Anthocyanins in blood-oranges. Z. Lebensmitt Untersuch 127: 1-4

Fatus, G.K. 1969: Natural conditions for tobacco growing in the Zeravshan valley. ALL-UNION TOBACCO RESEARCH INSTITUTE. Collected research papers. Part 2, Krasnodar: Krasnod. Knizhn. Izdat., 65-82. Price: 1.16 roubles

Zonn, S.V.; Shishov, L.L. 1970: Natural conditions, soils and features of their distribution in Colombia. Pochvovedenie, 8, 37-49

Doazan, F. 1970: Natural constraints and the farm. Pur pan, Toulouse 75: 108-14

Khan, M.Q.; Hussain, M. 1964: Natural control of Laphygma exigua by a Mermis sp. (Nematoda). Indian J. Ent, New Delhi, 26: pt. 1, 124-125

Quednau, F.W. 1968: Natural control of Larch sawfly at Carleton, Bonaventure County, P.Q. Bi-m. Res. Notes Dep. For. Can 24(2): 15

Kulman, H.M. 1965: Natural control of the bagworm and notes on its status as a forest pest. J Econ Entomol 58(5): 863-866

Kulman, H.M. 1965: Natural control of the eastern tent caterpillar and notes on its status as a forest pest. J Econ Entomol 58(1): 66-70

Sanyal, P.K.; Bose, P.K. 1969: Natural coumarins from the leaves of Murraya paniculata (L.) Jack. Science and Culture 35(7): 332-333

Sambandam, C.N. 1964: Natural cross pollination in eggplant Solarium melongena. Econ. Bot 18: 128-31

Farooq Alam, M.; Memon, A.M. 1968: Natural cross pollination studies in cotton (G. hirsutum) in Hyderabad division. Pakist. Cott 13(1): 33-40

Berry, C.D.; Lessman, K.J.; White, G.A. 1970: Natural cross-fertilization in Vernonia anthelmintica L.) Willd. Crop Sci 10: 104-05

Van Rheenen, H.A. 1968: Natural cross-fertilization in sesame (Sesamum indicum L.). Tropical Agriculture 45: 147-153

Watts, L.E. 1968: Natural cross-pollination and the identification of hybrids between botanical varieties of Brassica oleracea L. Euphytica 17(1): 74-80

E.H.k, M.G.; Ahmed, I.S. 1965: Natural cross-pollination in rice in United Arab Republic. Ann. Agric. Sci., Cairo 43(3): 13-20

Choudhury, B.; Anothai Choomsai, M.L. 1970: Natural cross-pollination in some vegetable crops. Indian Journal of Agricultural Sciences 40(9): 805-812

Mungomery, V.E.; Glassop, A.J. 1969: Natural cross-pollination of cotton in central Queensland. Qd. J. agric. Anim. Sci 26(1): 69-74

Hammons, R.O.; Leuck, D.B. 1966: Natural cross-pollination of the peanut, Arachis hypogaea L., in the presence of bees and thrips. Agron J 58(4): 396

Wilson, V.E.; Law, A.G. 1972: Natural crossing in Lens esculenta Moench. Journal of the American Society for Horticultural Science 97(1): 142-143

Rao, D.V.N.rashimha; Rachie, K.O. 1965: Natural crossing in sorghum as affected by locality and season. Indian J Agr Sci 35(1): 8-13

Highley, T.L.; Scheffer, T.C. 1970: Natural decay resistance of 30 Peruvian woods. Res. Pap. U.S.D.A. For. Serv. FPL. 143: 4

Bakshi, B.K.; Puri, Y.N.; Singh, S. 1967: Natural decay resistance of Indian timbers. I. Introduction and method, II. Decay resistance of Sal (Shorea robusta Gaertn.) and Teak (Tectona grandis L.F.). Indian Forester 93(5): 305-328

Puri, Y.N. 1967: Natural decay resistance of Indian timbers. III. Heartwood extractives of Sal (Shorea robusta Gaertn.) and Teak (Tectona grandis L.f.). Indian For 93(7): 447-54

Khan, S.N. 1967: Natural decay resistance of Indian timbers. IV. Decay resistance of Irul (Xylia xylocarpa Taub.) and Laurel (Terminalia tomentosa Wight et Arn.). Indian Forester 93(8): 567-577

Puri, Y.N.; Khan, S.N. 1968: Natural decay resistance of Indian timbers. VI. Decay resistance of Sissoo (Dalbergia sissoo Roxb.), and Sandan (Ougeinia oojeinensis (Roxb.) Hochreut.). Indian For 94(9): 686-93

Puri, Y.N.; Khan, S.N. 1970: Natural decay resistance of Indian timbers. VII. Decay resistance of Kala Siris (Albiz(z)ia odoratissima Benth.), Kasi (Bridelia retusa Spreng.), Raj Brikh (Cassia fistula Linn.), Dhaman (Grewia tiliaefolia Vahl.), Anjan (Hardwickia binata Roxb.), Mahua (Madhuca latifol. J. Timb. Developm. Ass. India 16(3): 5-17

Puri, Y.N.; Singh, S.; Khan, S.N.; Bakshi, B.K. 1968: Natural decay resistance of Indian timbers. Y. Decay resistance of Haldu (Adina cordifolia Hook, f.), Salai (Boswellia serrata Roxb.), Walnut (Juglans regia Linn.), Mango (Mangifera indica Linn.) and Bahera (Terminalia belerica Roxb.). Indian Forester 94(8): 609-619

Anonymous 1968: Natural decay resistance of wood-based sheet building materials. Rep. Dir. For. Prod. Res., Lond 1968: 24-5

Knabe, W. 1970: Natural decrease of F absorbed by Spruce needles from polluted air. Staub, Dusseldorf 30(9): 384-5

Moore, R.P. 1965: Natural destruction of seed quality under field conditions as revealed by tetrazolium tests. Proc. int. Seed test. Ass 30: 995-1004

Ilvessalo, Y. 1970: Natural development and yield capacity of forest stands on mineral soils in northern Lapland. Acta for. fenn, 108: 43

Ku, P.K.; Ely, W.T.; Groce, A.W.; Ullrey, D.E. 1972: Natural dietary selenium, alpha -tocopherol and effect on tissue selenium. Journal of Animal Science 34(2): 208-211

Anasimov, A.M. 1965: Natural disease resistance and prospects of using it in the control of cabbage yellows. (Potatoes, vegetables, pulses, sunflower.). Texts of papers at the IVth All-Union Conference on immunity in Agricultural Plants, Kisinev., 104-06

Lukashevich, A.I. 1968: Natural disinfection of sunflower seeds infested with white rot. Sel'.-khoz. Biologiya 3(5): 777-9

Monsion, M.; Huchet, T.M.; Dunez, J. 1969: Natural dissemination of the viruses causing chrysanthemum mosaic and aspermy. Annls Phytopath, Paris 1(4): 583-589

Eichhorn, O. 1969: Natural distribution areas and areas of introduction of Fir woolly aphids (Dreyfusia. Z. angew. Ent 63(2): 113-31

Ilic, M.; Misilo, P. 1965: Natural drying of Quercus cerris sawn timber. Pregled naucnoteh. Rad. Inform., Sarajevo 2(2): 21-8

Ilic, M. 1967: Natural drying of sawn Beech by forced air circulation. Pregl. naucnoteh. Rad. Inform., Zavod Tehn. Drveta, Sarajevo. 4(2/3): 1-16

Purushotham, A.; Et Al 1967: Natural durability of commercially important timber species and efficacy of preservatives on land. (Part I). J. Timb. Developm. Ass. India 13(1): 3-88

Nash, T.G.; Mclean, M. 1968: Natural durability of heart Radiata examined. N.Z. Timb. J 15(3): 71-3

Skolmen, R.G. 1968: Natural durability of some woods used in Hawaii-preliminary findings. U.S. For. Serv. Res. Note Pacif. Sthwest. For. Range Exp. Sta, PSW-167, 7

Gambetta, A.; Orlandi, E. 1969: Natural durability of wood of Eucalyptus camaldulensis and E. globulus grown in Italy. Cellulosa e Carta 20(6): 13-9

Romanyk, N. 1966: Natural enemies of L. dispar in Spain. Boln Serv. Plagas for 9(18): 157-163

Zaguljaev, A.K. 1966: Natural enemies of Laccifer lacca among the Lepidoptera. Zool. Z., Moskva 45(7): 1033-9

Teran, B.J.B. 1969: Natural enemies of U. citri in areas of the States of Aragua and Carabobo, Venezuela. Revta Fac. Agron. Univ. cent. Venez, Maracay 5(3): 125-128

Marikovskii, P.; Ivannikov, A. 1966: Natural enemies of dodder in Kazakhstan. Zashch. Rast 11(4): 27-8

Sengupta, N. 1967: Natural enemies of flushworm (Laspeyresia leucostoma Meyr.) and the tea leaf roller (Graci-laria theivora Walsm.). Two and a Bud 14: 179-82

Esser, R.P.; Sobers, E.K. 1965: Natural enemies of nematodes. Proc. Soil Crop Sd. Soc. Fla 24: 326-353

Clancy, D.W.; Pierce, H.D. 1966: Natural enemies of some lygus bugs. J Econ Entomol 59(4): 853-858

Gothilf, S. 1969: Natural enemies of the Carob moth Ectomyelois ceratoniae (Zeller). Entomophaga 14(2): 195-202

Dysart, R.J. 1966: Natural enemies of the banded-wing whitefly, Trialeurodes abutilonea (Hemiptera: Aleyrodidae). Annals of the Entomological Society of America 59(1): 28-33

Boldyrev, M.I. 1965: Natural enemies of the currant stem midge and their role in reducing populations of the pest. Sborn, nauc. Rab. nauc.-issled. Inst. Sadov. I.V. Micurina. 11, 205-10

Bhatia, D.R.; Charan Singh. 1967: Natural enemies of the desert locust (Schistocerca gregaria Forsk.). Pl. Prot. Bull, New Delhi. 18(2): 14-17

Zagulyaev, A.K. 1966: Natural enemies of the lac insect among the Lepidoptera. Zoologicheskii Zhurnal 45(7): 1033-1039

Khan, A.G.; Mushtaque, M. 1971: Natural enemies of thin-vined Cuscuta (for Barbados). Report, Commonwealth Institute for Biological Control, 1971. 78-9

Werner, D. 1968: Natural environment of the Etna region. Gottinger bodenk. Ber, 3: 197

Foiles, M.W.; Curtis, J.D. 1965: Natural establishment of Ponderosa Pine in Central Idaho. U.S. For. Serv. Res. Note Intermt. For. Range Exp. Sta, INT-35, 4

Legner, E.F.; Bay, E.C. 1964: Natural exposure of Hippelates eye gnats to field parasitization and the discovery of one pupal and two larval parasites. Annals of the Entomological Society of America 57(6): 767-769

Okigbo, B.N.; Chedda, H.R. 1966: Natural fertility and chromosome numbers in several strains of star grasses. Niger. Agric. J 3: 72-75

Woodhead, W.D. 1969: Natural finishes on wood. For. Prod. Newslett. C.S.I.R.O. Aust, 365, 2-4

Pinigin, A.F.; Zabrodin, V.A. 1970: Natural foci of brucellosis. Vest, sel-khoz. Nauki Mosk., Inst. Sel'skogo Khozyaistva Krainego Severa, Noril'sk, RSFSR, 7, 96-99

Gorlenko, M.V. 1966: Natural foci of crop diseases. Revue roum. Biol 11(1-3): 81-83

Hasek, J. 1970: Natural food of red deer from the point of view of forest protection. Acta Univ. Agric., Brno (Fac. Silv.) 39(3): 225-61

Kashimura, T. 1968: Natural forest communities in Abukuma Mountains. Ecol. Rev., Sendai 17(2): 75-85

Petrov, V.V. 1966: Natural forests growing on carbonate grounds in the west of the Moscow region. Vest. mosk. gos. Univ. Ser. Biol. Pochv, 3, 98-107

Tohyama, M. 1968: Natural forests on Mount Amagi. Journal of the Faculty of Agriculture, Hokkaido University, Sapporo 56(1): 17-20

Fajzuldaev, K.K. 1965: Natural forms of wild apple in southern Kirgizia as plant breeding material. Transactions of the faculty of biology, Kirgiz University, and of biological departments, of Kirgiz higher educational establishments. Series genetics, breeding and biological methods, Frunze, 22-28

Sartz, R.S. 1970: Natural freezing and thawing in a silt and a sand. Soil Sci 109: 319-323

Morettini, A.; Clatti, B.; Colomo, A. 1969: Natural fruit drop of olives. Its effect on the economics of harvesting. Ital. agric 106: 569-82

Mckeag, R.; J. ]. 1965: Natural gas as a source of CO2 for greenhouse plants. Bull. Colo. Flower Grs' Ass, 185, 1-4

Kuhne, H.; Koster, P. 1967: Natural gas damage to street trees. NachrBl. Dtsch. PflSchDienst., Braunschweig 19(5): 121-2

Stender, J.A. 1964: Natural gas in horticulture. Meded. Dir. Tuinb 27: 117-22

Groth, R. 1971: Natural gas injuries to trees. Kurzmitteilung, Deutsche Dendrologische Gesellschaft. 7, 26-7

Groth, R. 1971: Natural gas injurious to trees. Kurzmitt. Dtsche dendrol. Gesel, 7, 26-7

Vissia, R. 1968: Natural gas or oil. A new comparison of costs of heating with natural gas and Redwood 1 3,500 sec. oil. Meded. Dir. Tuinb 31: 9-15

Savel'eva, L.S. 1969: Natural grafting of the root systems of woody species. Srastanie kornevyh sistem drevesnyh porod, Izdatel'stvo 'Lesnaja Promyslennost',Moscow., USSR: 72

Chinnamani, S. 1969: Natural grasslands (Kan-chas) of red soils of Hyderabad. Ann. arid Zone 8(1): 66-72

Akimkin, A.; Moryganov, A.N. 1970: Natural grasslands in the Moscow province and their present position. Nauch. Trudy Inst. Sel'. Khoz, tsentr. Raion. nechernozem. Zany. 24, 124-7

Gorbachev, B.N. 1969: Natural grasslands of Rostov province. Rastit. Resursy 5(2): 236-46

Mikheeva, N.N. 1966: Natural grasslands of the Emba Plateau used for hay or grazing. Trudy Inst. Bot., Alma-Ata 23: 123-38

Savic, M.S. 1968: Natural growth inhibitors in beans, Phaseolus vulgaris L. Izv. timirjazev. sel'.-hoz. Akad, 2, 14-23

Kefeli, V.I. 1965: Natural growth substances in leaves and buds of Willow. Doklady Akademii Nauk SSSR 162(2): 462-464

Brooke, M.S. 1965: Natural Haemagglutinins in Mice: Their Occurrence and Properties. Immunology 8: 375-383

Hayakawa, J.; Kondo, K. 1965: Natural haemagglutinins against chick erythrocytes in mouse sera obtained from several inbred strains established in Japan. Bull. exp. Anim, Tokyo 14: 18-22

Ingalls, T.H.; Adams, W.M.; Lurie, M.B.; Ipsen, J. 1964: Natural History of Adenocarcinoma of the Uterus in the Phipps Rabbit Colony. Journal of the National Cancer Institute 33: 799-806

Castro, T.R.; Ruppel, R.F.; Gomulinski, M.S. 1965: Natural history of the cereal leaf beetle in Michigan. Mich Agr Exp Sta Quart Bull 47(4): 624-653

Burgdorfer, W.; Friedhoff, K.T.; Lancaster, J.L. 1966: Natural history of tick-borne spotted fever in the USA. Susceptibility of small mammals to virulent Rickettsia rickettsii. Bulletin of the World Health Organization 35(2): 149-153

Tesh, R.B.; Chaniotis, B.N.; Aronson, M.D.; Johnson, K.M. 1971: Natural host preferences of Panamanian phlebotomine sandflies as determined by precipitin test. American Journal of Tropical Medicine and Hygiene 20(1): 150-156

Gadebusch, H.H.; Ward, P.A.; Frenkel, E.P. 1964: Natural Host Resistance to Infection with Cryptococcus Neoformans. Iii. the Effect of Cryptococcal Polysaccharide Upon the Physiology of the Reticuloendothelial System of Laboratory Animals. Journal of Infectious Diseases 114: 95-106

Gadebusch, H.H.; Johnson, A.G. 1966: Natural host resistance to infection with Cryptococcus neoformans. IV. The effect of some cationic proteins on the experimental disease. Journal of Infectious Diseases 116(5): 551-565

Gadebusch, H.H.; Johnson, A.G. 1966: Natural host resistance to infection with Cryptococcus neoformans. V. The influence of cationic tissue proteins upon phagocytosis and on circulating antibody synthesis. Journal of Infectious Diseases 116(5): 566-572

Nicota, B. 1966: Natural hybrid between Quercus macedonica DC. and Q. cerris L. Sumar. Pregl. (For. Rev.). 1-2, 12-20

Gancev, A.; Zelev, I. 1965: Natural hybrid forms between Quercus sessiliflora and Q. frainetto. Gorsko Stopanstvo 21(6): 6-10

Slee, M.U. 1971: Natural hybridization between Cuban Caribbean and Slash Pines. Silvae Genet 20(3): 63-6

Fedorovskii, V.D. 1969: Natural hybridization between Ribes altissimum Turcz. and R. hispidulum A. Pojark to the Tuva ASSR. Puti 'i metody obogashch. dendroflory Sib. i Dal'n. Vost, Novosibirsk, USSR, Nauka, 79-83

Bilan, M.V. 1965: Natural hybridization between lobolly and shortleaf pines in East Texas. Meeting internat. Un. For. Res. Org., Wkg. Gp. Prov. Res. & Test, 22: 2

Ozimova, V.A. 1969: Natural hybridization between spring and whiter wheat forms. Dokl. sel'skohoz. Akad. Timirjazev. (Rep. Timir-jazev agric. Acad.). 152, 187-90

Rosas, G.S. 1967: Natural hybridization in soya bean (G. max L.) in Pergamino, Argentina. Turrialba 17: 300-03

Dorofeev Dorofeyev, V.F. 1968: Natural hybridization in wheat populations. Vestn. sel'skohoz. Nauk. (Rec. agric. Sci.). 7, 16-26

Minasjan, M. a. K.; Minasjan, M. 1969: Natural hybridization in wheat under the influence of changed environment. I. A natural wheat-rye amphidiploid. Genetika (Genetics). Moskva 5(12): 17-27

Rutger, J.N.; Beckman, L.S. 1970: Natural hybridization of Phaseolus vulgaris L. x Phaseolas coccineus L. J. Amer. Soc. hort. Sci 95: 659-61

Culp, T.W.; Bailey, W.K.; Hammons, R.O. 1968: Natural hybridization of peanuts, Arachis hypogaea L., in Virginia. Crop Sci 8(1): 109-111

Velibekov, M.D. 1967: Natural hybridization of peas under the conditions of Dagestan. Transactions of junior scientists of the Dagestan Scientific Research Institute of Agriculture, Mahackala., 95-97

Rosas, G.S. 1967: Natural hybridization of soyabeans in Pergamino, Argentina. Turrialba 17(3): 300-3

Little, E.L.; Little, S.; Doolittle, W.T. 1967: Natural hybrids among pond, loblolly, and pitch pines. Us Forest Serv Res Pap Ne 67: 1-22

Pomogaeva, A.I.; Rybakova, G.P. 1968: Natural hybrids as initial material in breeding the Lens esculenta ssp. macrosperma. Uch. Zap. Penzensk. s.-kh. in-ta, 11, 202-209

Clewell, A.F. 1967: Natural hybrids between sericea and three native American lespedezas. J. Hered 58: 57-58

Santamour, F.S., J. 1970: Natural hybrids between Chinese and Cedar Elms from Texas. Bull. Torrey Bot. Cl 97(1): 72-3

Terrell, E.E.; Hovin, A.W.; Hill, H.D. 1965: Natural hybrids between Sphenopholis obtusata and Trisetum pensylvanicum (Gramineae). Bull. Torrey bot. Club 92(3): 169-82

Swarup, V.; Singh, B. 1965: Natural hybrids in ornamental cassias. Indian Hort 9(4): 15-16

Collins, D.D. 1966: Natural hybrids of Agropyron latiglume and Agropyron scribneri. Bull Torrey Bot Club 93(6): 417-426

Staszkiewicz, J.; Tyszkiewicz, M. 1969: Natural hybrids of P. mugo Turra and P. sylvestris L. in the Nowy Targ basin. Bull. Acad. polon. Sci.: Ser. Sci. biol 17: 579-88

Staszkiewicz, J.; Tyszkiewicz, M. 1969: Natural hybrids of P. mugo Turra x P. sylvestris L. in the Nowy Targ valley. Fragment, flor, geobot 15: 187-212

Rassvetaeva, E.G. 1966: Natural hybrids of plum and sloe. Nauc. Trud. krasnodar. pedag. Inst. (Sci. Trans. Krasnodar pedag. Inst.). 64, 56-59

Van Winckel, A. 1968: Natural inactivation of Tobacco mosaic virus on Tomato seed. Parasitica 24: l, 1-9

Siddiqui, M.R. 1971: Natural incidence of Puccinia helianthi Schw. on Helianthus cucumerifolius Torry & Gray in India. Science and Culture 37(3): 151-153

Storz, J. 1964: Natural infection in guinea-pigs with an agent of the psittacosis-lympihogranuloma group. Zbl. Bakt 193: 432-445

Mohapatra, L.N.; Gugnani, H.C.; Shivrajan, K. 1964: Natural Infection in Laboratory Animals Due to Trichophyton Mentagrophytes in India. Mycopathologia et Mycologia Applicata 24: 275-280

Ulbrioh, F.; Sodan, U. 1965: Natural infection in pigeons with Newcastle disease virus. Mh. VetMed 20: 340-344

Dunn, F.L. 1970: Natural infection in primates: helminths and problems in primate phylogeny, ecology, and behavior. Laboratory Animal Care 20(2): 383-388

Singh, R.P.; Lopez-Abella, D. 1971: Natural infection of Coriander plants by a strain of Clover yellow vein virus. Phytopathology 61(3): 333-334

De Soto, S.T.; Soto U.; R. 1968: Natural infection of D. a. azarae with a trypanosome resembling T. cruzi. Revta Fac. Med., Maracaibo 1(2): 15-25

Myers, B.J.; Kuntz, R.E.; Vice, T.E.; Kim, C.S. 1970: Natural infection of Echinococcus granulosus (Batsch, 1786) Rudolphi, 1805 in the Kenya baboon (Papio sp.). Laboratory Animal Care 20(2): 283-286

Herold, F. 1964: Natural infection of Impatiens sultani with Cucumber mosaic virus. Plant Dis. Reptr 48(8): 603-605

Purcifull, D.E.; Christie, S.R.; Zitter, T.A.; Bassett, M.I. 1971: Natural infection of Lettuce and Endive by Bidens mottle virus. Pl. Dis. Reptr. 55: 12, 1061-1063

Misra, D.P.; Sharma, S.K. 1964: Natural infection of Oxalis corniculata L., the alternate host of Puccinia sorghi Schw., in India. Indian Phytopath 17(2): 138-141

Horvath, J.; Hinfner, K. 1969: Natural infection of Rape with Cucumber mosaic virus in Hungary. Acta agron. hung 18(1-2): 226-229

Garms, R.; Weyer, F. 1968: Natural infection of S. damno-sum with O. volvulus in savanna regions of Guinea. Z. Tropenmed. Parasit, 19: pt 3, 289-296

Provvidenti, R.; Schroeder, W.T. 1972: Natural infection of Spinacia oleracea by Lettuce mosaic virus. Pl. Dis. Reptr 56(4): 281-284

Kudryashova, N.L.; Mlrolvubova, L.V.; Tarasevich, I.V.; Plotnikova, L.F.; Egorova, A.D. 1968: Natural infection of Trombiculid mites with the rickettsiae of tsutsugamushi disease in the Maritime Province. Medskaya Parazit 37: pt. 3, 302-305

Barbosa, F.S.; Barbosa, I.; Magalhaes Filho, A. 1966: Natural infection of cattle with Schistosoma mansoni. Proc 1st int. Congr. Parasit, Roma, 2: 703

D'Alessandro, A.; Mandel, S. 1969: Natural infections and behavior of Trypanosoma rangeli and Trypanosoma cruzi in the vector Rhodnius prolixus in Colombia. Journal of Parasitology 55(4): 846-852

Polak, Z. 1965: Natural infections of Sisymbrium loeselii Jusl. with Cabbage black ringspot and Tobacco mosaic viruses. Biologia Pl 7(5): 363-367

Lillis, W.G.; Burrows, R.B. 1964: Natural Infections of Spirometra Mansonoides in New Jersey Cats. Journal of Parasitology 50: 680

Sousa, O.E.; Galindo, P. 1972: Natural infections of Triatoma dispar Lent 1950 with Trypanosoma cruzi in Panama. American Journal of Tropical Medicine and Hygiene 21(3): 293-295

Knight, R.A. 1968: Natural infections of the sheep nematode, Trichostrongylus colubriformis, in Mississippi swine, and differences in specimens from sheep and swine. J. Parasit 54(3): 635-637

Leon, A.P.; Guerrero, J. 1969: Natural innate immunity to Brucelb melitensts. II. Genetic factors in the hereditary immunity of goals to Br. melitensis. Revta Invest. Salud publ, Mex., 29: 107-126

Ligachev, I.N. 1971: Natural interspecific hybridization of Oak in the montane forests of the N. Caucasus as a factor in morphological evolution. Lesoved, 6, 33-8

Sustov, V.S. 1966: Natural layering in Fraxinus excelsior. Nauc. Dokl. Vyss. Skoly (Biol. Nauki), Moskva. 2, 127-9

Volna, M.; Hauck, O. 1966: Natural layering of Picea abies. Sborn. Vysoke Skoly Zemed., Brno (Rada C) 35(2): 151-9

Stanek, W. 1967: Natural layering of Red Spruce in Quebec. Bi-m. Res. Notes Dep. For. Can 23(6): 42

Harnett, R.F. 1971: Natural light in glasshouses. Agriculture, UK 78(10): 446-450

Bilewicz, T. 1969: Natural limitation of Lygus rugulipennis Popp. by a group of Leiophron pallipes Curtis on the rye crop fields. Ekologia polska. Seria A 17(41): 811-824

Dzeneev, S.Ju. 1968: Natural losses in grapes during storage and means of reducing them. Vinodelie i Vino-gradarstvo 28(7): 23-7

Larin, I.V. 1964: Natural meadows and pastures and ways of transforming them. Bot 2., SSSR (Bot. J., USSR) 49(6): 822-32

Dykeman, W.R.; Sousa, A.S.D. 1966: Natural mechanisms of copper tolerance in a copper swamp forest. Canad. J. Bot 44(7): 871-8

Ottogalli, G.; Galli, A. 1967: Natural milk cultures for soft cheeses of the Crescenza variety. Annali Microbiol 17(4/6): 191-97

Feher, G.; Horvath, A.; Gregacs, M.; Et Al. 1971: Natural model experiment to study the soil-polluting effect of solid organic waste matter. Egesz-segtudomany 15(2): 145-151

Mcknight, M.E. 1968: Natural mortality factors of western budworm in Colorado. Proc. N. cent. Brch Am. Ass. econ. Ent, 23: pt. 1, 45-46

Sokolov, N.N. 1971: Natural mortality in Scots Pine stands. Lesn. Zh 14(1): 15-7

Way, M.J.; Banks, C.J. 1964: Natural mortality of eggs of the black bean aphid, Aphis fabae Scop., on the spindle tree, Euonymus europaeus L. Ann Appl Biol 54(2): 255-267

Sharma, M.L.; O'neil, L.C.; Laviolette, R. 1965: Natural mortality of overwintered eggs of Cinara sp. in the eastern districts. Ann. ACFAS 1966. 1965. 33: 68

Sharma, M.L. 1967: Natural mortality of winter eggs in the Provence cane aphid, Aphis donacis. Annls Soc. ent. Queb 12(3): 133-136

Nishiura, M. 1965: Natural mutation and its utilization in the selection of citrus fruits. Gamma Field Symposia. Number 4. The use of spontaneous mutations in plant breeding, 27-42

Schlager, G.; Dickie, M.M. 1971: Natural mutation rates in the house mouse. Estimates for five specific loci and dominant mutations. Mutation Research 11(1): 89-96

Green, E.L.; Schlager, G.; Dickie, M.M. 1965: Natural mutation rates in the house mouse: plan of study and preliminary estimates. Mutation Research 2(5): 457-465

Nath, K.; Olson, J.A. 1967: Natural occurrence and biological activity of vitamin A derivatives in rat bile. Journal of Nutrition 93(4): 461-469

Spratt, D.M. 1972: Natural occurrence, histopathology and developmental stages of dirofilaria roemeri in the intermediate host. International Journal for Parasitology 2(2): 201-208

Pichl, J.; Ruzicka, B. 1970: Natural occurrence of Cu in the main Czech cereals and legumes. Biol. Chem. Vyz. Zvirat. 6: 15-20

Niphadkar, S.M.; Rao, S.R. 1967: Natural occurence of Schistosoma spindale in Bandicota bengalensis in Bombay together with a note on their possible role in the dissemination of Schistosomiasis spindale in domestic ruminants. Indian Veterinary Journal 44(7): 563-565

Nozicka, J. 1966: Natural occurrence of Scots Pine in central and N. Bohemia. Prace Vyzkum. Ust. Lesn. Hosp. Mysl., Zbraslav-Strnady. 33, 127-49

Duffus, J.E.; Zink, F.W.; Bardin, R. 1970: Natural occurrence of Sow-thistle yellow vein virus on Lettuce. Phytopathology 60(9): 1383-1384

S.A.Ostazeski, H.A.Scott. 1966: Natural occurrence of Tomato ringspot virus in Birdsfoot-Trefoil. Phytopathology 56(6): 585-586

Anjaneyulu, A.; Apparao, A. 1968: Natural occurrence of cucumber mosaic virus on chilli in India. Indian Phytopath, New Delhi., 20: pt. 4, 380-381

De Wet, P.J. 1968: Natural occurrence of selenium in sheep blood and tissues and its possible biological effects. J S Afr Vet Med Ass 39(1): 93-97

Misra, D.P.; Ahmad, S.T.; Sheodhan Singh. 1965: Natural occurrence of specialised forms of Puccinia graminis and P. striiformis on Lolium perenne. Indian Phytopath 18: 214-15

Thakur, R.; Ramkrishna Rao, J. 1966: Natural occurrence of tetraploids in the F2 population of an intra-indica cross in rice, Oryza sativa, L. Science and Culture 32: 321-322

Staunton, W.P.; Kavanagh, T. 1966: Natural occurrence of the perfect stage of Gloeosporium concentricum (Grev.) Berk, and Br. Ir. J. agric. Res 5(1): 140-141

Jacques, R.P. 1970: Natural occurrence of viruses of the cabbage looper in field plots. Can. Ent 102(1): 36-41

Cumin, V. 1965: Natural or artificial. Lesn. Prom, 11, 18-21

Brigham, R.D. 1967: Natural outcrossing in dwarf-internode castor, Ricinus communis L. Crop Sci 7(4): 353-355

Hockett, E.A.; Eslick, R.F. 1970: Natural outcrossing on genetic male sterile barley. Crop Sci 10: 152-54

Turner, E.C.; Burton, R.P.; Gerhardt, R.R. 1968: Natural parasitism of dung-breeding diptera: a comparison between native hosts and an introduced host, the face fly. Journal of Economic Entomology 61(4): 1012-1015

Diallo, A.; De Wispelaere, G.; Lebrun, J.-P.; Riviere, R. 1968: Natural pastures of S. Ferio (Senegal Republic). Et. agrostol. 23 Maisons-Alfort, Val-de-Marne, France: Inst. Elev. Med. Vet. Pays Trop, 173

Malato-Beliz, J. 1966: Natural pastures. Aspects of their ecological-agronomic survey and improvement. Melhoramento 19: 41-65

Garcia Bilbao, J.L. 1966: Natural phenolic acids in cereal grains as regulators of plant growth. Revta Ciencia apl 20: 132-43

Berman, Z.I. 1966: Natural philosophy and biology in the first half of the 19th century. Ideological and natural-scientific postulates of Darwinism. History of evolutionary theories in biology, Nauka, Moscow, 96-146

Mullick, D.B. 1971: Natural pigment differences distinguish first and sequent periderms of conifers through a cryofixation and chemical techniques. Canad. J. Bot 49(9): 1703-11

Koch, J.; Sajak, E. 1965: Natural pigments in citrus fruits. 1. Carotenoids of oranges and mandarin oranges. Ztschr. Lebensmittel-Untersuch. -Forsch 126: 260-271

Kochummen, K.M. 1966: Natural plant succession after farming in Sg. Kroh. Malayan Forest 29(3): 170-181

Macara, A.Mendes 1967: Natural polyploidy in plants of forest and ornamental interest. Agros 50(5/6): 167-204

Korneva, E.I.; Reznikova, S.A. 1965: Natural polyploidy in the selection of peppermint. Agrobiologija, 3, 454-6

Chaniotis, B.N.; Neely, J.M.; Correa, M.A.; Tesh, R.B.; Johnson, K.M. 1971: Natural population dynamics of phlebotomine sandflies in Panama. Journal of Medical Entomology 8(4): 339-352

Reynolds, R.R. 1967: Natural pruning. Forest Farmer, Atlanta, Ga 26(6): 8-9

Vezina, P.E.; Paille, G. 1967: Natural pruning of Spruce and Balsam Fir in Quebec. Commonw. For. Rev 46(2): 125-32

Connell, D.W. 1970: Natural pungent compounds. III. The paradols and associated compounds. Aust.J. Chem 23: 369-76

Ercegovac, D.; Costoglou, M. 1968: Natural rabies antibodies. Reel Med. vet 144: 1215-1220

Boulger, L.R. 1966: Natural rabies in a laboratory monkey. Lancet 1(7444): 941-943

Roussel, L. 1966: Natural radiation in the forest, or the elements of forest photology. Bull. Soc. For. Franche-Comte., 33: 2; 4; 5; 6; 8, 27-38; 105-22; 144-56; 165-83; 239-50

Baranov, V.I.; Morozova, N.G.; Kuna-Sheva, K.G. 1971: Natural radio elements in bog soils of Estonia. Pochvovedenie 10, 112-117

Raikov, L.; Sapundzhiev, S. 1966: Natural radioactivity and chemical composition of iron-manganese concretions in saline and podzolized soils. Pochv. Agrokhim 1: 327-330

Pesek, F. 1967: Natural radioactivity as a component of the chemical content of natural radioactive elements in the edible parts of agricultural crops. Rostlinna Vyroba 13: 153-164

Pesek, F. 1967: Natural radioactivity as a component part of the chemical content of natural radioactive elements in the edible parts of agricultural crops. Rostlinna Vyroba 13(40): 2, 153-164

Grodzinskii, D.M. 1965: Natural radioactivity of plants and soils. Estestvennaya radio-activnost' rastenii i pochv, Kiev: 'Naukova Dumka'., 216. Price: 0.77 roubles

Baranov, V.I.; Morozova, N.G.; Kunasheva, K.G. 1966: Natural radioactivity of sod carbonate soil in the Estonian S.S.R. Radioaktiv. Pochv. Metody Opred., Akad. Nauk SSSR. 195-212

Veshko, E.I. 1966: Natural radioactivity of soils in the Kharkov region. Radioaktiv. Pochv. Metody Opred., Akad. Nauk SSSR. 66: 212-219

Alekseev, Y.. V. 1965: Natural radioactivity of soils of Leningrad region and radiometric determination of total potassium. Zap. leningr. sel'.-khoz. Inst 98(3): 44-48

Veshko, E.I. 1965: Natural radioactivity of soils of Sumsk region and determination of potassium in them by a radiometric method. Visn. sil.-hispod. Nauky, 1, 44-50

Veshko, E.I. 1966: Natural radioactivity of soils of the Poltava district. Visn. sil.-hospod. Nauky. 6, 37-43

Raikov, L. 1965: Natural radioactivity of some Bulgarian soils. Rasteniev'dni Nauki 6: 31-36

Yastrebov, M.T. 1971: Natural radioactivity of some chernozems in the European part of the USSR. Vestnik Moskovskogo Universiteta, Seriya 6, Biologiya, Pochvovedenie. 5, 93-97

Hatchell, G.E.; Ralston, C.W. 1971: Natural recovery of surface soils disturbed in logging. Tree Plant. Notes 22(2): 5-9

Bock, J.H.; Bock, C.E. 1969: Natural reforestation in the Northern Sierra Nevada-Donner Ridge burn. Proc. Tall Timbers Fire Ecol. Conf, 9, 119-26

Harris, A.S. 1967: Natural reforestation on a mile-square clearcut in southeast Alaska. U S Forest Serv Res Pap Pnw 52: 1-16

Horvat Marolt, S. 1967: Natural regeneration. Gozd. Vestn 25(1/2): 1-14

Kielland Lund, J. 1964: Natural regeneration and forest types. Norsk Skogbr 10(9): 279-81

Malureanu, S. 1968: Natural regeneration from seed of some forest tree species in the arboretum of Mihaesti. Rev. Padurilor 83(1): 15-8

Landbeck, H. 1965: Natural regeneration in Barenfels. Sozial. Forstw., Berl 15(2): 43-6

Szappanos, A. 1964: Natural regeneration in Carex pilosa-Querceto-petraeae-Carpinetum. Part II. Erdesz. Faipari Egyetem tud. Kozl., Sopron. 1, 185-203

Shearer, R.C.; Schmidt, W.C. 1970: Natural regeneration in Ponderosa Pine forests in western Montana. US For. Serv. Res. Pap. Intermt. For. Range Exp. Sta, INT-86, 19

Jakovlev, F.S. 1969: Natural regeneration in forests of the 'sel'ga'. Trudy Zapovedn. 'Kivac'. 1, 65-81

Kadlus, Z. 1966: Natural regeneration in managed stands in the Norway Spruce/Beech/Silver Fir zone in the Orlicke Mts. Opera corcontica, Praha. 3: 113-32

Boe, K.N. 1965: Natural regeneration in old-growth Redwood cuttings. U.S. For. Serv. Res. Note Pacif. Sthwest. For. Range Exp. Sta, PSW-94, 5

Laharrague, P. 1967: Natural regeneration in plantations of Araucaria angustifolia. Rev. for. argent 11(3): 71-8

Fowells, H.A.; Stark, N.B. 1965: Natural regeneration in relation to environment in the mixed conifer forest type of California. U.S. For. Serv. Res. Pap. Pacif. Sthwest. For. Range Exp. Sta, PSW-24, 14

Rollet, B. 1969: Natural regeneration in the dense, moist evergreen forest of the plain of Venezuelan Guyana. Bois For. Trop, 124, 19-38

Purcelean, S. 1971: Natural regeneration in the virgin and quasi-virgin forests of the Rumanian Carpathians. Rev. Padurilor 86(7): 342-4 + smries

Stanescu, V.; Moldoveanu, G. 1968: Natural regeneration of Abies alba: ecological and silvicultural studies. Bul. Inst. Polit. Brasov, Ser.B: Econ.for, 10, 123-31

Holubcik, M. 1965: Natural regeneration of Abies grandis and Pinus peuce at Kysihybl. Lesn. Cas., Praha 11(4): 379-92

Bueno, J. 1965: Natural regeneration of Araucaria angustifolia. Anales Cientificos, Departamento de Publicaciones de la Universidad Agraria, Lima 3(3): 278-99

Badea, M.; Et Al 1966: Natural regeneration of Beech woods in Rumania. Contributii la studiul regenerarii naturale a fagetelor din Republica Socialista Romania, Institutul de Cercetari Forestiere,Bucharest, Romania: 128

Tappeiner, J.C.I.Helms, J.A. 1971: Natural regeneration of Douglas Fir and White Fir on exposed sites in the Sierra Nevada of California. Amer. Midl. Nat 86(2): 358-70

Tappeiner, J.C., Ii 1967: Natural regeneration of Douglas-Fir (Pseudotsuga menziesii (Mirb.) Franco) on Blodgett Forest in the mixed conifer type in the Sierra Nevada of California. Dissertation Abstracts B, The Sciences and Engineering 27: 3739-3740

Hatch, C.R.; Lotan, J.E. 1969: Natural regeneration of Douglas-Fir in central Montana. U.S. For. Serv. Res. Note Intermt. For. Range Exp. Sta, INT -85, 4

Polujahtov, K.K.; Kuprijanov, N.V. 1965: Natural regeneration of Larix sukaczewii in the Gorkiy Trans-Volga region. Lesn. Z., Arhangel'sk 8(2): 24-7

Bergan, J. 1971: Natural regeneration of Norway Spruce under shelterwood compared with plantations at Grane in Nordland. Medd. Norske Skogforsoksv 28(4): 104, 191-211

Rubcov, N.I.; Volk, E.A. 1965: Natural regeneration of Picea abies by layering. Bot. Z 50(6): 870-3

Bristol, M.L. 1968: Natural regeneration of Pinus cubensis. Turrialba 18(3): 282-7

Jurkevic, I.D.; Fedoruk, A.T. 1970: Natural regeneration of Pinus strobus in Belo-russia. Bjull. Glavn. Bot. Sada. 75, 19-24

Hursudjan, P.A.; Saroev, A.A. 1967: Natural regeneration of Pinus sylvestris on land formerly under the waters of Lake Sevan. Ajastani Gensapanakan Antes (Biol. Z. Armenii) 20(6): 59-68

Ismihanova, A.A. 1968: Natural regeneration of Pistacia mutica. Trudy Azerb. Nauc-Issled. Inst. Lesn. Hoz. i Agrolesomeilior, 8, 116-27

M'jakusko, V.K. 1964: Natural regeneration of Prunus avium in the forests of W. Ukraine. Ukr. bot. Z 21(3): 56-70

Davydenko, I.O. 1965: Natural regeneration of Pyrus communis in the forests of the Ukrainian forest-steppe E. and W. of the Dnieper. Ukr. bot. Z 22(3): 52-9

Tanasescu, S. 1967: Natural regeneration of Robinia pseudoacacia from seed. Rev. Padurilor 82(7): 349-52

Purcelean, S. 1965: Natural regeneration of Sessile Oak in the mixed hardwood forests of the hill region of Rumania. Rev. for. franc 17(12): 832-40

Stark, N. 1965: Natural regeneration of Sierra Nevada mixed conifers after logging. J Forest 63(6): 456-461

Anonymous 1967: Natural regeneration of Sitka Spruce. Rep. Res. For. Comm., Lond. 68. 1967-68, publ. 1968. 57

Orlund, A. 1965: Natural regeneration of Spruce and Fir in Hordaland. Tidsskr. Skogbr 73(2): 174-81

Bulow, V. 1964: Natural regeneration of Spruce at high altitudes in the Bayerische Wald range. Allg. Forstzeitschr 19(39): 593-5

Grobnic, G.; Duran, V. 1967: Natural regeneration of Spruce stands in N. Moldavia. Contributii la studiul regenerarii naturale a molidisurilor din nordul Moldovei, Institutul de Cercetari Forestiere, Ministerul Economiei Forestiere,Bucharest., Romania: 71

Stoiculescu, C.D.; Ciolac, D.; Tanasescu, S. 1966: Natural regeneration of Taxodium distichum on the flood-plain of the lower course of the Jiu River. Rev. Padurilor 81(7): 380-5 + smries

Czekalski, M. 1969: Natural regeneration of Taxus baccata and Picea omorica in Szczecin. Roczn. Dendrol. Polsk. Tow. Bot., Warsz 23: 185-91

Gordon, D.T. 1970: Natural regeneration of White and Red Firinfluence of several factors. U.S. For. Serv. Res. Pap. Pacif. Sthwest. For. Range. Exp. Sta, PSW-58, 32

Agamirova, M.I. 1968: Natural regeneration of certain species of Pinus in Baku Botanical Garden. Bjull. Glavn. Bot. Sada, Moskva. 68, 89-91

Kwasnitschka, K. 1972: Natural regeneration of mixed stands in a highly mechanized forest enterprise. Schweiz. Z. Forstw 123(3): 160-83

Ciumac, G.; Et Al 1967: Natural regeneration of pure Quercus petraea, Q. petraea/Q. robur, and mixed hardwood stands. Contributii la studiul regenerarii naturale a gorunetelor, goruneto-steja-retelor si a sleaurilor de deal, Institutul de Cercetari Forestiere, Ministerul Economiei Forestiere,Bucharest, Romania: 116

Lukin, A.V. 1966: Natural regeneration of species of conifers introduced into the Lipetsk region. Bjull. Glavn. Bot. Sada, Moskva. 61, 11-3

Benedetto, G.D.P.li, E.; Tomaselli, R. 1964: Natural regeneration of the Pine wood of Linguaglossa. Ann. Accad. Ital. Sci. For 13: 71-109

Anonymous 1970: Natural regeneration of woody species, and quantitative analysis of its growth. Estestvennoe vozobnovlenie drevesnyh porod i kolicestvennyj analiz ego rosta, Izdatel'stvo 'Nauka',Moscow, USSR: 115

Zvaigzne, J. 1964: Natural regeneration under the forest canopy in the conditions of the Aegopodium forest type. Latvijas Lauksaimniecibas Akademijas Raksti, Jelgava. 14: 181-7

Anonymous 1967: Natural regionalization. Komun. ser. roln. Inst. Slacki, Opole, 1, 64

Gouveia, D.G. 1969: Natural regions and agrarian zones of Mozambique. Agron. Mocambicana, Lourenco Marques 3(2): 61-78

Sandner, H.; Stanuszek, S. 1968: Natural regulating factors and biological control of L. decemlineata. Pflanzenschutzberichte 38: pt. 12, 177-187

Lea, A. 1968: Natural regulation and artificial control of brown locust numbers. J. ent. Soc. sth. Afr 31(1): 97-112

Alexander, R.R. 1968: Natural reproduction of Spruce-Fir after clearcutting in strips, Fraser Experimental Forest. U.S. For. Serv. Res. Note Rocky Mt. For. Range Exp. Sta, RM-101, 4

Barnes, R.D. 1967: Natural reproduction, superovulation and insemination of black-tailed jackrabbits and the transfer of their ova to domestic rabbits. Dissertation Abstracts B, The Sciences and Engineering 27: 4167

Kabaev, V.I. 1971: Natural resin yield of Scots Pine in mixed stands and low-density stands. Gidrol. lesokhim. Prom 24(4): 15-6

Stricker, J. 1972: Natural resins and their industrial utilization. Sozial. Forstw 22(2): 60-1

Levy, F.M.; Conge, G.; Mauss, H.; Lindenmann, S.; Lucel, Y. 1966: Natural resistance and acquired immunity in tuberculosis in mice. Revue d'Immunologie et de Therapie Antimicrobienne 30(4): 275-305

Ortiz Cespedes, M.R. 1966: Natural resistance of Pinus radiata D. Don timber against termite attack (Reticulitermes flavipes Kollar). Bol. tec. Esc. Ingen. For. Univ. Chile. 11, 12-9

Splawa Neyman, S. 1970: Natural resistance of dry-felted fibreboards to fungi. Prace Inst. Tech. Drewna 17(3): 127-39

Stollerman, G.H.; Ekstedt, R.D.; Cohen, I.R. 1965: Natural Resistance of Germ-Free Mice and Colostrum-Deprived Piglets to Group a Streptococci. Journal of Immunology 95: 131-140

Gaete, R.P. 1965: Natural resistance of wood and its derivatives. Attack by destructive fungi. (I.) Tests with wood of Nothofagus dombeyi, Pinus radiata and Fitzroya cupressoides. Maderero, Santiago de Chile. 12, 21-2

Ortiz Cespedes, M.R.; Cuevas, E. 1965: Natural resistance of wood and wood-based products to attack by biological agents. Inf. tec. Inst. For., Santiago. 21, 122-6

Scheffer, T.C.; Cowling, E.B. 1966: Natural resistance of wood to microbial deterioration. Ann. Rev. Phytopath., Palo Alto. 4: 147-70

Yamashita, J. 1968: Natural resistance to echinococcosis and the biological factors responsible. Bulletin of the World Health Organization 39(1): 121-122

Vehovszky, J. 1969: Natural resistance to fungi and preservation of Poplar wood. Faip. Kutatas, 135-42

Vanbreuseghem, R. 1968: Natural resistance to mycoses. Bruxelles Medical 48(10): 629-638

Anonymous 1970: Natural resources and present day development of the Haouz plain. Revue Geogr. maroc., Casablanca. 17: 3-42

Anonymous 1969: Natural resources, foreign trade, and economic development. Am. J. agric. Econ, Urbana, Ill. 51(5): 1583-602

Botman, K.S. 1968: Natural restoration of soil fertility on terraces on mountain slopes. Pocvoved, 4, 77-83

Satoo, T. 1964: Natural root grafting and growth of living stumps of Chamaecyparis obtusa. Misc. Inform. Tokyo Univ. For, 15, 54-60

Korjakin, D.A. 1966: Natural root grafting in Oak. Lesn. Hoz 19(1): 27-9

Graham, B.F.; Bormann, F.H. 1966: Natural root grafts. Bot Rev 32(3): 255-292

Serebrjakova, L.K. 1965: Natural root-grafting in Quercus robur. Sborn. Rabot Lesn. Hoz. Vsesojuz. Nauc. Issled. Inst. Lesovod, 50, 69-87

Fahre, R. 1966: Natural rubber in the economy of the producer countries: prospects and possible choices. Revue Gen. Caoutchouc Plastiques, Paris, 43: 10, 1263-70

Swan, P.L. 1971: Natural rubber trade: the implications of synthetic rubber innovations. Appl. Econ., Oxford 3(1): 57-66

Ravenholt, A. 1970: Natural rubber's new horizons. Field Staff Rep. SE. Asia Ser., Hannover. 18(12): 1-20

Manis, W.E. 1965: Natural rubber, Hevea brasiliensis, survives the economic pressure of synthetic rubber through horticultural advances. Proc. Soil Sci. Soc. Fla 1965. 24: 369-75

Heidenreich, E. 1967: Natural russeting of apples as a physiological, biochemical and physical reaction. Meded. Rijksfac. Landb Wetensch. Gent 32: 752-67

Hebert, D.; Cowan, I.M. 1971: Natural salt licks as a part of the ecology of the mountain goat. Canadian Journal of Zoology 49(5): 605-610

Hourrigan, J.L.; Klingsporn, A.L.; McDaniel, H.A.; Riemenschneider, M.N. 1969: Natural scrapie in a goat. Journal of the American Veterinary Medical Association 154(5): 538-539

Klplinger, D.C.; Miller, D.E. 1966: Natural season poinsettia tests in 1965. Ohio Flor. Ass. Bull, 443, 3-6

Kiplinger, D.C.; Miller, D.; Wackerman, G. 1967: Natural season poinsettia tests in 1966 on growth regulators, daylength, and soil mixtures. Ohio Flor. Ass. Bull, 455, 7-10

Graber, R.E. 1970: Natural seed fall in White Pine (Pinus strobus L.) stands of varying density. U.S. For. Serv. Res. Note Ntheast. For. Exp. Sta, NE-119, 6

Ermolenko, P.M. 1971: Natural seedling of clear-felled areas in the E. Sayan mountains. Lesn. Khoz, 9, 23-6

Gillett, J.D. 1967: Natural selection and feeding speed in a blood-sucking insect. Proceedings of the Royal Society of London. Series B Biological Sciences 167(1008): 316-329

Kimura, M.; Crow, J.F. 1969: Natural selection and gene substitution. Genetical Research 13(2): 127-141

Leigh, E.G., J. 1970: Natural selection and mutability. Am. Nat 104: 301-305

Corbin, K.W.; Uzzell, T. 1970: Natural selection and mutation rates in mammals. Am. Nat 104: 37-53

Skorkowski, E. 1970: Natural selection and subspecies characters. Arch. Tierz 13: 331-336

Cannings, C.; Edwards, A.W. 1968: Natural selection and the de Finetti diagram. Annals of Human Genetics 31(4): 421-428

Cannings, C. 1971: Natural selection at a multiallelic autosomal locus with multiple niches. Journal of Genetics 60(3): 255-259

Faris, D.G. 1970: Natural selection bulk-populations.; and adjunct for cereal breeding programs. Cereal News 15(1): 14-24

Singh, L.N.; Johnson, L.P.V. 1969: Natural selection in a composite cross of barley. Canad. J. Genet. Cytol 11(1): 34-42

Johnson, L.P.V.; Singh, L.N. 1971: Natural selection in a hybrid population of barley. Barley genetics II. Proceedings of Second International Barley Genetics Symposium. Washington State University, Pulman 1971. 443-49

Duseckin, V.I. 1968: Natural selection in sowings of red clover. On the way to the renewal of the Earth. Valgus, Tallin, 139-67

Davidovskij, G.M. 1966: Natural selection of cereals in cultivation. Hayasdani Kensabanakan Handes (Armen. biol. J.) 19(8): 61-70

Marshall, H.G. 1966: Natural selection of cold resistance in winter oat bulk populations. Crop Sci 6: 173-76

O'donald, P. 1972: Natural selection of reproductive rates and breeding times and its effect on sexual selection. Am. Nat 106: 368-379

Spetner, L.M. 1964: Natural selection: an information-transmission mechanism for evolution. Journal of Theoretical Biology 7(3): 412-429

Fowler, D.P. 1965: Natural self-fertilization in three jack pines and its implications in seed orchard management. Forest Sci 11(1): 55-58

Gooding, G.V. 1970: Natural serological strains of Tobacco ringspot virus. Phytopathology 60(4): 708-713

Cleveland, M.L.; Murdock, L.L. 1964: Natural sex attractant of the lesser peach tree borer. J Econ Entomol 57(5): 761-762

Meigh, D.F.; Filmer, A.A.E. 1969: Natural skin coating of the Apple and its influence on scald in storage. III. a-farnesene. J.Sci. Fd Agric 20(3): 139-143

Meigh, D.F.; Filmer, A.A.E. 1969: Natural skin coating of the apple and its influence on scald in storage. III. alpha -Farnesene. J. Sci. Fd. Agric 20: 139-43

Filmer, A.A.E.; Meigh, D.F. 1971: Natural skin coating of the apple and its influence on scald in storage. IV. Oxidation products of a-farnesene. J. Sci. Fd Agric 22: 188-90

Neilson, W.T.A.; Wood, F.A. 1966: Natural source of food of the apple maggot. J Econ Entomol 55(4): 997-998

Posnette, A.F.; Cropley, R. 1964: Natural spread of chlorotic leaf spot virus in apple and quince. East Malling Res Sta Ann Rep 1963: 115-116

Monsion, M.; Huchet, T.-M.; Dunez, J. 1969: Natural spread of chrysanthemum mosaic and aspermy viruses. Ann. Phytopath 1: 583-9

Monsion Marie Huchet Therese-Marie Dunez, J. 1969: Natural spread of mosaic and aspermy viruses of Chrysanthemum. Annls Phytopath 1(4): 583-589

Rich, A. 1967: Natural spread of stem pitting virus of apple. Plant Dis Rep 51(4): 291-293

Bud, N. 1965: Natural stands of Castanea sativa in Cehu-Silvaniei Forest District. Rev. Padurilor 80(5): 245-52

Dzeneev, S.Ju. 1968: Natural storage loss of grapes and ways of reducing it. Vinodelie i Vinogradarstvo SSSR (Wine-making and Viticulture USSR). 7, 23-27

Johnson, R.H.; Halliwell, R.E.W. 1968: Natural susceptibility to feline panleucopaenia of the coati-mundi. Vet. Rec, Dep. Vet. Med., Bristol Univ., 82: 582

Hedayat, H.; Khayetian, H.; Ghavifekr, M.; Donoso, G. 1970: Natural toxins in foods. Beans and favism. Cahiers Nutrition Dietetique 5(1): 23-29

Mammerickx, M.; Derzelle, E. 1969: Natural transmission of bovine enzootic leucosis. Annls Med. vet 113(2): 114-22

Verdes, N.; Doicescu, M.; Hortopan, R.; Bratu, A. 1970: Natural transmission of contagious pustular dermatitis from sheep and goats to man, and a case of person-to-person transmission. Revue Path. comp. Med. exp 70: 71-74

Mammerickx, M.; Derzelle, E. 1969: Natural transmission of enzootic bovine leucosis. Annls Med. vet 113: 114-122

Gupta, P.K.; Srivastava, A.K. 1970: Natural triploidy in Cynodon dactylon (L.) Pers. Caryologia 23: 29-35

Foja Singh Ved Brat, S.; Khoshoo, T.N. 1967: Natural triploidy in viviparous onions. Cytologia 32(3-4): 403-407

Dzafarov, N.A. 1966: Natural variability and mutations in mulberry. Me'ruzeler. Azerb SSR Elmler Akad. (Rep. Acad. Sci. Azerb. SSR) 22(9): 85-89

Joshi, B.S.; Rachie, K.O. 1966: Natural variability in Pennisetum typhoides. Journal of the IARI Post-Graduate School 4(1-2): 177-182

Vodyanaya, L.; Khromova, V. 1969: Natural variability of Cochliobolus sativus -the cause of helminthosporiosis of Grasses. Agrokhimiya 1969. 125-128

Robinson, J.F.; Thor, E. 1969: Natural variation Abies of the southern Appalachians. For. Sci 15(3): 238-45

Barnes, B.V. 1969: Natural variation and delineation of clones of Populus tremuloides and P. grandidentata in northern Lower Michigan. Silvae Genet 18(4): 130-42

Clausen, K.E. 1968: Natural variation in catkin and fruit characteristics of Yellow Birch. Proc 15th Ntheast. For. Tree Impr. Conf., Morgantown, W. Va., 1968. 2-7

Swarup, V.; Slngh, B. 1965: Natural variation in gulmohar. Indian Hort 10(1): 15-16; 33

Bhat, B.K.; Pandita, P.N.; Dhar, A.K. 1971: Natural variation in medicinal plants, Atropa belladonna and Digitalis lanata. SABRAO Newsl, Mishima 3(1): 27-30

Bennett, M.D. 1970: Natural variation in nuclear characters of meristems in Vicia faba. Chromosoma 29(3): 317-335

Posey, C.E.; Bridgwater, F.; Buxton, J.A. 1969: Natural variation in specific gravity, fiber length, and growth rate of Eastern Cottonwood in the southern great plains. Tappi 52(8): 1508-11

Kellison, R.C. 1968: Natural variation of Yellow Poplar in North Carolina. Proc 15th Ntheast. For. Tree Impr. Conf., Morgantown, W. Va., 1968. 7-14

Agarwala, R.K.; Sharma, V.C. 1970: Natural varietal infectibility of stone fruits with bacterial canker. Indian J. agric. Sci 40(6): 559-561

Elmore, J.C.; Howland, A.F. 1964: Natural versus artificial dissemination of nuclear-polyhedrosis virus by contaminated adult cabbage loopers. J Insect Pathol 6(4): 430-438

Krasnitskij, A.M. 1965: Natural layering of coppice Oak as one of the features of its biology. Bot. Z, 50: 11, 1604-11

Abramov, V.N. 1965: Natural regeneration in gaps in Pine stands. Lesn. Hoz 18(10): 54-5

Ermolenko, P.M. 1966: Natural regeneration on clear fellings in the Scots Pine forests in the E. Sayan Mts. Lesn. Hoz 19(2): 24-6

Janse, A.R.P.; Hoeks, J. 1971: Naturali gas injury. Tijdschr. ned. Heidemaatsch 82: 17-25

Richmond, G.B. 1965: Naturalization of Java Podocarpus in Hawaii rain forest. U.S. For. Serv. Res. Note Pacif. Sthwest. For. Range Exp. Sta, PSW-76, 5

Voloshin, M.P. 1971: Naturalization of exotics on the S. coast of the Crimea. Trudy, Gosudarstvennyi Nikitskii Botanicheskii Sad, Yalta. 44, 87-99

Heath, M.E. 1969: Naturalized big trefoil (Lotus pedunculatus Cav.) ecotypes discovered in Crawford county, Indiana. Proc. Indiana Acad. Sci 79: 193-7

Gladstones, J.S. 1966: Naturalized subterranean clover (Trifolium subterraneum L.) in Western Australia : the strains, their distributions, characteristics, and possible origins. Aust. J. Bot 14(3): 329-54

Gladstones, J.S. 1967: Naturalized subterranean clover strains in Western Australia: a preliminary agronomic examination. Aust. J. agric. Res 18(5): 713-31

Katitch, R.V. 1964: Naturally acquired immunity to clostridial infections and its practical value. Revue Immunol. Ther. antimicrob 28: 349-356

Smithers, S.R.; Terry, R.J. 1965: Naturally acquired resistance to experimental infections of Schistosoma mansoni in the rhesus monkey (Macaca mulatta). Parasitology 55(4): 701-710

Loew, F.M.; Martin, C.L.; Dunlop, R.H.; Mapletoft, R.J.; Smith, S.I. 1970: Naturally-occurring and experimental thiamin deficiency in cats receiving commercial cat food. Canadian Veterinary Journal 11(6): 109-113

Hogarth-Scott, R.S. 1968: Naturally occurring antibodies to the cuticle of nematodes. Parasitology 58(1): 221-226

Shotts, E.B.; Kistner, T.P. 1970: Naturally occurring cutaneous streptothricosis in a cottontail rabbit. Journal of the American Veterinary Medical Association 157(5): 667-670

Kistner, T.P.; Shotts, E.B.; Greene, E.W. 1970: Naturally occurring cutaneous streptothricosis in a white-tailed deer (Odocoileus virginianus). Journal of the American Veterinary Medical Association 157(5): 633-635

Banks, K.L.; Clarkson, T.B. 1967: Naturally occurring dermatomycosis in the rabbit. Journal of the American Veterinary Medical Association 151(7): 926-929

McLaughlin, R.F.; Edwards, D.W. 1966: Naturally occurring emphysema, the fine gross and histopathologic counterpart of human emphysema. American Review of Respiratory Disease 93(1): 22-29

Galton, M.; Slater, S.M. 1965: Naturally occurring fatal disease of the pregnant golden hamster. Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine 120(3): 873-876

Bird, O.D.; McGlohon, V.M.; Vaitkus, J.W. 1965: Naturally occurring folates in the blood and liver of the rat. Analytical Biochemistry 12(1): 18-35

Manning, P.J.; Banks, K.L.; Lehner, N.D. 1968: Naturally occurring giant cell pneumonia in the rhesus monkey (Macaca mulatta). Journal of the American Veterinary Medical Association 153(7): 899-904

Tomaszewska, E. 1968: Naturally occurring growth substances regulating leaf abscission in the genus Deutzia. Arbor. Kornickie 13: 173-215

Prestwood, A.K.; Kellogg, F.E. 1971: Naturally occurring haemonchosis in a white-tailed deer. Journal of Wildlife Diseases 7(2): 133-134

Gjerstad, G. 1971: Naturally occurring hallucinogens. II. Quarterly Journal of Crude Drug Research 11(4): 1797-1805

Gjerstad, G. 1972: Naturally occurring hallucinogens. III. Quarterly Journal of Crude Drug Research 12(1): 1849-1864

Diercks, F.H.; Shacklette, M.H.; Kelley, H.B.; Klite, P.D.; Thompson, S.W.; Keenan, C.M. 1965: Naturally occurring histoplasmosis among 935 bats collected in Panama and the Canal Zone, July 1961-February 1963. American Journal of Tropical Medicine and Hygiene 14(6): 1069-1072

Slauson, D.O.; Russell, S.W.; Schechter, R.D. 1971: Naturally occurring immune-complex glomerulonephritis in the cat. Journal of Pathology 103(2): 131-133

Matthews, H.B.; Hodgson, E. 1966: Naturally occurring inhibitor(s) of microsomal oxidations from the house fly. Journal of Economic Entomology 59(5): 1286-1288

Lichtenstein, E.P.; Morgan, D.G.; Mueller, C.H. 1964: Naturally occurring insecticides in cruciferous crops. Journal of Agricultural and Food Chemistry 12: 158-161

Dudas, M.J.; Pawluk, S. 1969: Naturally occurring organo-clay complexes of orthic black chernozems. Geoderma 3(1): 5-17

Harwell, J.F.; Boyd, D.D. 1968: Naturally occurring oxyuriasis in mice. Journal of the American Veterinary Medical Association 153(7): 950-953

Burnett, A.R.; Thomson, R.H. 1967: Naturally occurring quinones. Part X. The quinonoid constituents of. J. Chem. Soc, 21C, 2100-4

Burnett, A.R.; Thomson, R.H. 1968: Naturally occurring quinones. Part XII. Extractives from. J. Chem. Soc, 7C, 850-3

Burnett, A.R.; Thomson, R.H. 1968: Naturally occurring quinones. Part XV. Biogenesis of the anthraqninones in Rubia tinctorum L. (madder). J. chem. Soc., Lond, 19, 2437-41

Brew, E.J.C Thomson, R.H. 1971: Naturally occurring quinones. Part XX. Anthraquinones in Digitalis purpurea. Journal of the Chemical Society, C, 10, 2007-2010

Basu, R.N.; Ghosh, B.; Sen, P.K. 1968: Naturally occurring rooting factors in mango (Mangifera indica L.). Indian Agriculturist 12: 194-6

Jones, A.W.; Mackiewicz, J.S. 1969: Naturally occurring triploidy and parthenogenesis in Atractolytocestus huronensis Anthony (Cestoidea: Caryophyllidea) from Cyprinus carpio L. in North America. J. Parasit 55(6): 1105-1118

Hartley, E.G. 1964: Naturally-occurring B virus infection in Cynamolgus monkeys. Vet. Rec 76: 555-557

White, D.J.; Waldron, M.M. 1969: Naturally-ccurring Tyzzer's disease in the gerbil. Veterinary Record 85(5): 111-114

White, D.P.; Ellis, B.C. 1965: Nature and action of slow release fertilizers as nutrient sources for forest seedlings. Q. Bull. Mich. St. Univ. agric. Exp. Stn 47: 606-614

White, D.P.; Ellis, B.G. 1965: Nature and action of slow release fertilizers as nutrient sources for forest tree seedlings. Mich Agr Exp Sta Quart Bull 47(4): 606-614

Harrison, M.T.; Mcfarlane, S.; Harden, R.M.; Wayne, E. 1965: Nature and Availability of Iodine in Fish. American Journal of Clinical Nutrition 17(2): 73-77

Duperon, P. 1971: Nature and behaviour of free and esterified sterols during the germination of various kinds of seeds. Hypothesis concerning the role of these substances in plants. Physiologie Vegetole 9(3): 373-399

Duperon, P. 1971: Nature and behaviour of free and esterifled sterols during the germination of various kinds of seed. Hypotheses on the function of these substances in plants. Physiologie Vegteale 9(3): 373-399

Bekker, E.E.; Dovletmuradov, K.D.; Pushkareva, I.D.; Poletaeva, V.F.; Shilina, S.G.; Yasakova, E.I. 1971: Nature and biosynthesis of the toxin of the causal agent of Fusarium wilt, the mechanism of its action and probable transformations in the Cotton plant. Izv. Akad. Nauk SSSR Ser. biol., 1971. 5, 749-754

Subrahmanyam, V.P. 1969: Nature and classification of tropical climates with special reference to India. Indian For 95(10): 659-69

Bolishev, N.N. 1965: Nature and composition of the adsorption complex in solonets. Suppl Agrokem. Talajt 14: 359-363

Schories, B. 1969: Nature and content of the socialist management, its application and experience up to now in socialist farms under the conditions of manifold co-operation. Agrarinformauon, Potsdam, Potsdam 7: 1-6

Vysockij, A.A. 1969: Nature and degree of resinosis of the wood of Pinus sylvestris tapped with bleaching powder to induce the formation of resinous wood. Rast. Resursy, Leningrad 5(2): 279-81

Anonymous 1971: Nature and development of the agricultural sector. Arab Economist. Beirut 35(11): 18-26

Weathers, L.G.; Sanchez A.; L.; Platt, R.G. 1969: Nature and distribution of Citrus virus diseases in Chile. Agricultura tec 29(4): 166-170

Nussbaumer, E.; Guckert, A.; Jacquin, F. 1970: Nature and distribution of organic matter binding soil aggregates in the presence of radioactive glucose. C. r. Hebd. Seanc. Acad. Sci, Paris, 270D: 3235-3238

Zawadzka, B.; Basak, W.; Millkan, D.F. 1967: Nature and distribution of pome fruit viruses in Poland. Plant Dis Rep 51(2): 117-120

Basak, W.; Zawadzka, B.; Millikan, D.F. 1967: Nature and distribution of stone fruit viruses in Poland. Plant Dis Rep 51(2): 115-117

Everett, L.J.; Anderson, C.A.; Macdougall, D. 1966: Nature and extent of Guthion residues in milk and tissues resulting from treated forage. J. agric. Fd Chem 14(1): 47-53

Sandhu, J.S. 1966: Nature and extent of damage to sugarcane caused by white-fly (Aleurolobus barodensis Mask) in the Punjab. J. Res, Ludhiana., 3: 414-16

Jodha, N.S. 1971: Nature and extent of diversion of long-term agricultural loans in Gujarat. Artha-Vikas. Vallabh Vidyanagar 7(1): 53-68

Dunham, R.S. 1964: Nature and extent of losses due to weeds. Res. Rep. 21st N. cent. Weed Control Conf, 145-8

Aubertin, G.M. 1971: Nature and extent of macropores in forest soils and their influence on sub-surface water movement. US For. Serv. Res. Pap. Ntheast. For. Exp. Sta, NE 33

Jean, C. 1968: Nature and frequency of malformations in the new born rat as a function of the dose of oestrogen injected into the pregnant mother. C. r. Seanc. Soc. Biol, 162: 5; 6, 1144-49

Mcwilliam, J.R. 1967: Nature and genetic control of the vernalization response in Phalaris. Annual report, Division of Plant Industry, CSIRO, Canberra 1967. 34-35

Mcwilliam, J.R. 1968: Nature and genetic control of the vernalization response in Phalaris tuberosa L. Aust J Biol Sci 21(3): 395-408

Benepal, P.S. 1967: Nature and genetics of insect resistance in vegetable crops with particular reference to cucurbits. Dissertation Abstracts 28: 489

Maxcy, R.B. 1967: Nature and growth response of the microflora of pasteurized, packaged milk. J Milk Food Technol 30(7): 213-218

Katznelson, H. 1965: Nature and importance of the rhizosphere. "Ecology of Soil-borne Plant Pathogens". Int. Symp. Univ. Calif., 1965. 187-209

Nakagawa, M.-O.; Gocho, H.; Nishio, K.; Watanabe, S. 1966: Nature and inheritance of ear-scab resistance in Wheat I. Heritability estimates and heritable relationships of ear-scab resistance and some agronomic characters in F2 of the cross Shinchu-naga X Norin 12. Bull. Tokai-Kinki natn. agric. Exp. Stn. 15: 43-54

Chawdhry Muhammad Yaqub Smith, P.G. 1971: Nature and inheritance of self-incompatibility in Capsicum pubescens and C. cardenasii. Hilgardia 40(12): 459-470

Allsopp, B.A.; Njogu, A.R.; Humphryes, K.C. 1971: Nature and location of Trypanosoma brucei subgroup exoantigen and its relationship to 4S antigen. Experimental Parasitology 29(2): 271-284

Shkonde, E.I Koroleva, I.E. 1964: Nature and mobility of soil nitrogen. Agrokhimiya, 10, 17-36

Lee, K.C.; Campbell, R.W. 1969: Nature and occurrence of juglone in Juglans nigra L. HortScience 4: 297-298

Relan, S.; Vyas, S.R. 1971: Nature and occurrence of yeasts in Haryana grapes and wines. Vitis 10(2): 131-135

Lavender, D.R.; Singer, L.; Armstrong, W.D. 1968: Nature and origin of the plaque produced in cutaneous calciphylaxis. Journal of Dental Research 47(6): 907-909

Gerasimov, I.P. 1971: Nature and originality of paleosols. Paleopedology: Origin, Nature and Dating of Paleosols, International Society of Soil Science and Israel University Press, 15-27

Stepanov, V.V. 1972: Nature and properties of products of interaction of humic acids of peat with some nitrogenous substances. Pochvovedenie 2, 56-66

Corte. Real, L 1971: Nature and relative importance of weed seeds present in wheat seed. 1 degrees, Simposio Nacional de Herbologia 1: 19-31

Bernetti, G. 1971: Nature and sentiment, exotic species and clear felling. Ital. for. mont 26(1): 20-2

Burkhardt, J.W.; Tisdale, E.W. 1969: Nature and succesional status of Western Juniper vagatation in Idaho. Journal of Range Management, Portland 22(4): 264-70

Goujon, M. 1969: Nature and synthesis of the morphogenic factor responsible for the appearance of sclerotia in C. Xrolfsii. C.r. hebd. Seanc. Acad. Sci, Paris, 269: 22, 2195-2198

Gasser, J.K.R. 1971: Nature and value of residua fertilizer nitrogen in soils. Technical Bulletin, Ministry of Agriculture, Fisheries and Food. London 20: 114-124

Way, J.M. 1970: Nature conservation and agriculture. Agriculture, London 77(7): 316-9

Bogdanov, B. 1970: Nature conservation and economics. Ekon. sel'. Hoz, Moskva 45(2): 7-11

Riecke, F. 1969: Nature conservation and forests for reaction in E. Germany. Bericht uber Landwirtschaft, Hamburg 47(3): 560-7

Riecke, F. 1969: Nature conservation and forests for recreation in E. Germany. Ber. Landw, Hamburg 47(3): 560-7

Bondo-Andersen, A. 1972: Nature conservation and landscape planning. Tolvmandsbladet. Kbenhavn 44(3): 147-154

Juon, P. 1967: Nature conservation in riverain flood-plains. Schweiz. Z. Forstw 118(6): 373-98

Thas, J. 1968: Nature conservation in some European countries. Meded. Rijksfac. Landbouww. Gent 23(1): 41-72

Blattny, C. 1965: Nature in Vietnam. Ziva 13(6): 201-202

Aung Mai, U. 1968: Nature of Bamboo lignin. Union of Burma Journal of Science and Technology, Rangoon 1(1): 11-4

Garber, R.H.; Houston, B.R. 1967: Nature of Verticillium wilt resistance in cotton. Phytopathology 57(8): 885-888

Hankin, L.; Puhalla, J.E. 1971: Nature of a factor causing interstrain lethality in Ustilago maydis. Phytopathology 61(1): 50-53

Serafini, N.A.; Di Tomassi, G.; Salera, U. 1965: Nature of a new ferroprotein fraction of the bone marrow. Bollettino della Societa Italiana di Biologia Sperimentale 41: 339-341

Fukami, J.; Shishido, T. 1966: Nature of a soluble, gtaiat Mone-dependent enzyme system active Sa cleavage of methyl parathion to desmethyl parathion. J. econ. Ent 59(6): 1338-1346

Escolar, R.P.; Lopez, M.A.L. 1968: Nature of aggregation in tropical soils of Puerto Rico. J. Agric. Univ. P. Rico 52: 227-232

Eiff, J.A. 1966: Nature of an anticoagulant from the cephalic glands of ancylostoma caninum. Journal of Parasitology 52(5): 833-843

Omer, A.; Mowat, A.G. 1968: Nature of anaemia in rheumatoid arthritis. IX. Folate metabolism in patients with rheumatoid arthritis. Annals of the Rheumatic Diseases 27(5): 414-424

Denamur, R.; Martinet, J. 1970: Nature of anterior hypophysial hormones stimulating milk secretion in the normal ewe. Archs int. Pharmacodyn. Ther 186(1): 185-87

Kuniyasu, C. 1969: Nature of antibody response of chickens to Mycoplasma gallisepticum. National Institute of Animal Health Quarterly 9(3): 119-128

Hampton, R.O. 1966: Nature of bean yield reduction by bean yellow mosaic virus. Phytopathology 56: 147-8

Hyde, A.H. 1966: Nature of calcium effect in phosphate uptake by barley roots. Pl. Soil 24: 328-332

Domanskaya, E.N. 1969: Nature of carbohydrate metabolism in olive varieties differing in frost resistance. Byul. Gos. Nikitsk. botan, sada, 4; Pt. 11, 79-82

Rostad, H.P.W.; Arnaud, R.J.S. 1970: Nature of carbonate minerals in two Saskatchewan soils. Can. J. Soil Sci 50: 65-70

Fujino, Y.; Fujishima, T. 1972: Nature of ceramide in bovine milk. Journal of Dairy Research 39(1): 11-14

Dorough, H.W.; Casida, J.E. 1964: Nature of certain carbamate metabolites of the insecticide Sevin. J. agrie. Fd Chem, Easton, Pa. 12(4): 294-304

Heddle, J.A.; Bodycote, D.J.; Whissell, D. 1969: Nature of chromatid deletions. Induced mutations in plants. Proceedings of a symposium jointly organized by the IAEA and FAO and held at Pullman, Wash., 14-18 July, International Atomic Energy Agency, Vienna., 637-43

Manchester, A.C. 1965: Nature of competition in fluid milk markets. Market organization and concentration. Agric. econ. Rep. U.S. Dept. Agric, 67: 76

Suzuki, T.; Nakano, K.; Shimizu, Y.; Isayama, Y.; Kawakami, Y. 1970: Nature of complement-fixing antibodies in horses infected with equine rhinopneumonitis virus. National Institute of Animal Health Quarterly 10(3): 123-128

Kulkarni, A.P. 1964: Nature of data on prices and arrivals in regulated markets. Artha Vijnana, Poona. 6(3): 206-13

Moore, W.H.; Johnson, F.M. 1967: Nature of deer browsing on hardwood seedlings and sprouts. J Wildlife Manage 31(2): 351-353

Katarki, B.H.; Bhavikatti, S.N. 1971: Nature of floral shedding and its impact on yield of 'Laxmi' cotton (Gossypium hirsutum L. Indian Journal of Agricultural Sciences 41(1): 16-20

Rao, Y.S.; Israel, P.; Yadava, C.P.; Roy, J.K. 1971: Nature of gall midge resistance in rice. Current Science 40(18): 497-498

Harinarayana, G.; Tiwari, J.L.; Murty, B.R. 1969: Nature of genetic load in relation to diversity in Pennisetum. Indian J. Genet 29(1): 1-9

Bhattacharya, A.K.; Pant, N.C. 1969: Nature of growth inhibitors for Trogoderma granarium Everts (Coleoptera: Dermestidae) in lentil (Lens esculenta Moench.) and French bean (Phaseolus vulgaris L.). J. stored Prod. Res 5(4): 379-388

Stienswat, W.; Pollard, L.H.; Campbell, W.F. 1971: Nature of hard-seededness in lima beans (Phaseolus lunatus L.). Journal of the American Society for Horticultural Science 96(3): 312-315

Ingle, T.R.; Bose, J.L. 1969: Nature of hemicelluloses of Bamboo (Dendrocalamus strictus). Indian J. Chem 7(8): 783-5

Blum, A. 1970: Nature of heterosis in grain production by the sorghum panicle. Crop Sci 10(1): 28-31

D'yakonova, K.V. 1964: Nature of humic substances of the soil solution, their dynamics and methods of study. Pochvovedenie 4, 57-66

Fotiev, A.V. 1968: Nature of humous substances of water. Doklady Akademii Nauk SSSR 179: 443-446

Titova, N.A. 1968: Nature of humus of dry-steppe soils of the central Ergenies and the northwestern part of the Caspian lowland. Pochvovedenie, 3, 80-94

Freyman, S.; Brink, V.C. 1967: Nature of ice-sheet injury to alfalfa. Agron J 59(6): 557-560

Zitter, T.A.; Murakishi, H.N. 1969: Nature of increased virulence in Tobacco mosaic virus after passage in resistant Tomato plants. Phytopathology 59: 11, 1736-1739

Mccambridge, W.F. 1967: Nature of induced attacks by the Black Hills beetle, Dendroctonus ponderosae (Coleoptera: Scolytidae). Annals of the Entomological Society of America 60(5): 920-928

Nilan, R.A. 1967: Nature of induced mutations in higher plants. Genetika (Genetics), Moskva, 3, 3-22

Kimura, T.; Basu, S.L.; Nandi, S. 1967: Nature of induced persistent vaginal cornification in mice. I. Effect of neonatal treatment with various doses of steroids. Journal of Experimental Zoology 165(1): 71-87

Kimura, T.; Nandi, S.; DeOme, K.B. 1967: Nature of induced persistent vaginal cornification in mice. II. Effect of estradiol and testosterone on vaginal epithelium of mice of different ages. Journal of Experimental Zoology 165(2): 211-222

Kimura, T.; Basu, S.L.; Nandi, S. 1967: Nature of induced persistent vaginal cornification in mice. III. Effects of estradiol and testosterone on vaginal epithelium in vitro. J. exp. Zool 165: 497-503

Uzenbaev, E.H. 1967: Nature of inheritance and vitality of interspecific hybrids of G. hirsutum and G. barbadense). Trud. vses. nauo.-issled. Inst. Hlopk. (Trans. All-Un. sci.-res. Inst. Cott.), 12, 82-100

Zajnisev, A. 1965: Nature of inheritance of economically valuable properties in inter-varietal cotton hybrids from direct and reciprocal crossing. Trud. Inst. Selekc. Semenovod. Hlop. Trans. Inst. Cotton Breed. Seed Product. Taskent, 1, 71-79

Maddaiah, V.T.; Kurnick, A.A.; Hulett, B.J.; Reid, B.L. 1964: Nature of Intestinal Phytase Activity. Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine 115: 1054-1057

Matsusaka, Y.; Sherman, G.D.; Swindale, L.D. 1965: Nature of magnetic minerals in Hawaiian soils. Soil Sci 100(3): 192-199

Saginadze, G.V. 1967: Nature of morphogenetic processes in remote hybridization of some pulses. (Trans. Bot. Inst. Acad. Sci. Georgian SSR) : Ser. kul't. Flora (Ser. cult. Flora), 1967 25(2): 48-71

Ogleznev, A.K. 1968: Nature of new formations in heavy hydromorphic soils. Pochvovedenie, 3, 27-39

Bhandari, H.C.; Saxena, S.N. 1970: Nature of organic phosphorus compounds in some soils of Rajasthan. Journal of the Indian Society of Soil Science 18(3): 307-312

Gibbs, H.S. 1971: Nature of paleosols in New Zealand and their classification. Paleopedology: Origin, Nature and Dating of Paleosols, International Society of Soil Science and Israel University Press, 229-244

Stubbendieck, J.; Burzlaff, D.F. 1971: Nature of phytomer growth in blue grama. Journal of Range Management 24(2): 154-156

Toussoun, T.A.; Weinhold, A.R.; Linderman, R.G.; Patrick, Z.A. 1968: Nature of phytotoxic substances produced during plant residue decomposition in soil. Phytopathology 58(1): 41-45

Patil, B.D.; Amar Singh Ranjit Ghosh. 1964: Nature of ploidy in the pasture grass Pennisetum ciliare Linn. Current Science 33: 184-185

Saaltink, G.J.; Dimond, A.E. 1964: Nature of plugging material in xylem and its relation to water flow in Fusarium infected Tomato stems. Phytopathology 54(9): 1137-1140

S Harma, K.N. 1967: Nature of prunings and mulch as manure. Two and a Bud 14: 88-9

Medwadowski, B.; Van Der Veen, J.; Olcott, H.S. 1968: Nature of residual lipids in menhaden fish protein concentrate. J. Amer. Oil Chem. Soc 45: 709-710

Van Gundy, S.D.; Kirkpatrick, J.D. 1964: Nature of resistance in certain citrus rootstocks to citrus nematode. Phytopathology 54(4): 419-427

Chambers, A.Y.; Epps, J.M. 1966: Nature of resistance in soybean varieties and breeding lines resistant to Heterodera glycines. Phytopathology 56: 873

Epps, J.M.; Chambers, A.Y. 1965: Nature of resistance in soybean varieties resistant to Heterodera glycines. Proceedings, abstracts and papers and addresses of the 62nd Annual Convention of the Association of Southern Agricultural Workers held in Dallas, Texas, 1, 2, 3, 222-23

Malo, S.E. 1967: Nature of resistance of 'Okinawa' and 'Nemaguard' peach to the root-knot nematode Meloidogyne javanica. Proc. Amer. Soc. hort. Sci 90: 39-46

Callaham, R.Z. 1964: Nature of resistance of pines of bark beetles. Breeding pest-resistant trees, Pergamon Press, Oxford and London., 01

Chiba, O. 1964: Nature of resistance of poplar clones to a leaf rust, Melampsora laricipopulina Kleb. Breeding pest-resistant trees, Pergamon Press, Oxford and London., 207-20

Sherrod, L.L. 1969: Nature of resistance to Verticillium dahliae Kleb, in strains of Peppermint (Mentha piperita L.) developed by irradiation. Dissertation Abstracts B, The Sciences and Engineering 29(12): 4472

Mishra, R.R. 1967: Nature of rhizosphere fungal flora of certain plants. Pl. Soil 27: 162-166

Chen, S.S.; Thimann, K.V. 1966: Nature of Seed Dormancy in Phacelia tanacetifolia. Science 153(3743): 1537-1539

Broadbent, F.E. 1967: Nature of soil organic matter. Proc. west. Weed Control Conf 21: 31-35

Ruhe, R.V.; Williams, J.M.; Shuman, R.C.; Hill, E.L. 1965: Nature of soil parent materials in Ewa-Waipahu area, Oahu, Hawaii. Soil Science Society American Proceedings 29(3): 282-287

Buzov, I.P.; Zvyagintsev, V.I.; Zemlyanukhin, A.A. 1971: Nature of some bitter products formed during cheesemaking. Voprosy Pitaniia 30(6): 61-63

Chambers, A.Y.; Epps, J.M. 1967: Nature of soybean resistance to Heterodera glycines. Plant Dis Report 51(9): 771-774

Becze, J. 1964: Nature of sterility of nutritional origin in cattle in Hungary. Wien, tierarztl.Mschr 51: 289-300

Kapoor, V.P.; Mukherjee, S. 1969: Nature of sugars in Cassia absus seed polysaccharide. Current Science 38: 38-39

Jindal, V.K.; Mukherjee, S. 1969: Nature of sugars in Phoenix dactylifera seed polysaccharide. Current Science 38(19): 459-460

Jatala, P.; Russell, C.C. 1972: Nature of Sweet Potato Resistance to Meloidogyne incognita and the Effects of Temperature on Parasitism. Journal of Nematology 4(1): 1-7

Sowden, F.J. 1966: Nature of the amino acid compounds of soil. I. Isolation and fractionation. Soil Sci 102: 202-207

Sowden, E.J. 1966: Nature of the amino acid compounds of soil: II. Amino acids and peptides produced by partial hydrolysis. Soil Sci 102(4): 264-271

Cropper, W.J.; Scott, M.L. 1966: Nature of the blood folates in young chicks and poults fed pteroylmonoglutamic acid or pteroylheptaglutamates. Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine 122(3): 817-820

Dupuis, T.; Jambu, P.; Dupuis, J. 1972: Nature of the bonds between calcium and fulvic acids. Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences. 274D: 25, 3362-3364

Hyde, A.H. 1966: Nature of the calcium effect in phosphate uptake by barley roots. Pl Soil 24(2): 328-32

Sotirova, V. 1970: Nature of the changes in the contents of carbohydrates and amino-acids in interspecific and intergeneric grafts in the genus Helianthus. Comptes Rendus de l'Academie des Sciences Agricoles en Bulgarie 3(4): 335-342

Tikhonov, S.A. 1968: Nature of the contact horizon of soils formed in binary deposits. Vest. Akad. Navuk Belarussk SSR, Ser. s.-gas. Navuk, 4, 12-17

Ritterson, A.L. 1966: Nature of the cyst of Trichinella spiralis. Journal of Parasitology 52(1): 157-161

Roth, I.L.; Williams, R.P. 1964: Nature of the cytopathic area surrounding virulent cells of Bacillus anthracis in mouse spleen. J Bacteriol 88(2): 523-530

Tichy, V.; Mannsbartova, E.; Minar, J. 1964: Nature of the detoxicant action of humic acids. Biol. Plant 6: 306-314

Bocarova, V.M. 1970: Nature of the development of technological characteristics of cotton fibre with single-cross hybridization. Proceedings of the Sixth Conference of Junior Scientists in Agriculture in Uzbekistan. (Breeding, genetics and growing in cotton), Fan,Taskent, 3-6

Udovenko, G.V.; Min'ko, I.F. 1966: Nature of the effect of potassium and chlorine on nitrogen metabolism of plants. Fiziologiya Rast 13: 236-245

Wood, D.E. 1965: Nature of the End Organ in Ophiotaenia Filaroides (La Rue). Journal of Parasitology 51: 541-544

Mariat, F.; Diez, E. 1971: Nature of the endogenous spores of S. schenckii. Remarks on the sexual form of this fungus. C. r. hebd. Seanc. Acad. Sci., Paris. Ser. D 272: 1075-1077

Bondarenko, S.F.; Grigor'eva, L.V. 1966: Nature of the fraction of easily hydrolysed nitrogen in Azov chernozem and of the effect of nitrogen fertilizers on maize yield. Pochvovedenie, 5, 73-79

Rensburgh, H.J.V.n Strijdom, B.W.; Rabie, C.J. 1968: Nature of the genetic determinant of effectiveness in strains of Rhizobium japonicum. S. Afr. J. agric. Sci 11: 623-26

Mahadevan, A.; Caroselli, N.E. 1964: Nature of the growth-promoting activity associated with the culture filtrates of Fusarium oxysporum f. lycopersici (Sacc.) Snyd. & Hans. Nature. Lond., 203: 4945, 665-666

Rajulu, G.S.; Kulasekarapandian, S.; Krishnan, N. 1972: Nature of the hormone from a nematode Phocanema depressum Baylis. Current Science 41(2): 67-68

Velasco, F. 1966: Nature of the humic acids of different Pyrenean forest soils. An. Edafol. Agrobiol, 25: 9/10, 521-8

Tokudome, S.; Kanno, I. 1965: Nature of the humus of humic allophane soils in Japan. Part 2. Some physico-chemical properties of humic and fulvic acids. Soil Sci. Pl. Nutr 11(5): 9-15

Tokudome, S.; Kanno, I. 1965: Nature of the humus of mimic allophane soils in Japan. Part I. Humic acids (Ch)/fulvic acids (Cf) ratios. Soil Sci. Pl. Nutr 11(5): 1-8

Tokudome, S.; Kanno, I. 1968: Nature of the humus of some Japanese soils. Trans 9th int. Congr. Soil Sci 3: 163-173

Lebedeva, I.I. 1969: Nature of the illuvial horizon of pale gray forest soils on moraine loams. Pochvovedenie, 2, 3-11

Anonymous 1970: Nature of the influence of crop residues on fungus-induced root diseases. Bull. Wash. agric. Exp. Stn. 716: 32

Anonymous 1970: Nature of the influence of crop residues on fungus-induced root diseases: a summary of the Western Regional Project W-38. Bull. Wash. exp. Agric. Stn, 716: 32

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