Variation of fruit size and its influence on fruit quality in sand pear (Pyrus pyrifolia (Burm) Nakai) Grewal, G.P.S.; Minhas, P.P.S.; Singh, S.N.; Sandhu, A.S. Punjab Horticultural Journal 28(1-2): 47-49 1988 https://eurekamag.com/research/002/273/002273869.php