Field and Laboratory Studies on Some Photosynthetic Bacteria in Aswan High Dam Lake I. Some Physical and Chemical Characteristics Shoreit, A.A.M.; Ahmed, A.M.; Shabeb, M.S.A. International Review of Hydrobiology 74(4): 419-432 1989 1434-2944 10.1002/iroh.19890740404 https://eurekamag.com/research/062/041/062041542.php