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On the ionic composition of five tropical fish-ponds of Aligarh (U.P.), India Jamil A. KhanA. Quajjum OriginalPaper Pages: 195 - 202
Hémiptères hétéroptères aquatiques des environs de tananarive G. Richard-Vindard OriginalPaper Pages: 203 - 212
Algal flora and its importance in the economy of rice fields A. B. Gupta OriginalPaper Pages: 213 - 222
The application of the algicide CA 350 in the Lubi Reservoir near Třebič, Czechoslovakia Eva Kocurová OriginalPaper Pages: 223 - 240
The effect of exercise on the survival of Phoxinus phoxinus L. in sodium cyanide solutions H. H. Costa OriginalPaper Pages: 241 - 251
Übersicht über das Potamophytoplankton der Tisza (Theiss) in Ungarn G. Uherkovich OriginalPaper Pages: 252 - 280