The planktonic freshwater species of Microcystis Drouet, Francis, 1907-1982 creator Daily, William A., contributor text book Chicago 1939 1939
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ENG Microcystis QK1 .F4 v. 20, no. 3 Publication (Field Museum of Natural History : 1909), 461 Publication (Field Museum of Natural History : 1909), Botanical series, v. 20, no. 3 https://www.biodiversitylibrary.org/bibliography/42246 https://www.biodiversitylibrary.org/bibliography/2285 986245 10.5962/bhl.title.2285