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By: El-Otify, Ahmed Mohamed - Iskaros, Isaac AgaibyType: ArticleIn: Associação Brasileira de LimnologiaVolume:Series:Issue:Date: 2015-06-01Page Range:Publication Info: Associação Brasileira de Limnologia 2015-06-01Subjects: Phytoplankton potamoplankton River Nile Water quality Zooplankton