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Effects of phosphorus and nitrogen enrichment on the phytoplankton in a tropical reservoir (Lobo Reservoir, Brazil)[J] . R. Henry,J. G. Tundisi,P. R. Curi.Hydrobiologia . 1984 (2)
[2]
Response of three phytoplankton bioassay techniques in experimental ponds of known limiting nutrient[J] . W. John O’Brien,Frank Denoyelles.Hydrobiologia . 1976 (1)