Productivity and Distribution of Trichoptera Larvae in a Colorado Mountain Stream John O. Mecom OriginalPaper Pages: 151 - 176
On the Morphology and Life-history of a New Species of Chroococcidiopsis Geitler (Chroococcales) G. L. Tiwari OriginalPaper Pages: 177 - 182
Thermal stratification and annual heat budget of a Florida sinkhole lake Frank G. Nordlie OriginalPaper Pages: 183 - 200
Distribution of phytoplankton during the early development of Volta Lake (1964–1968) S. Biswas OriginalPaper Pages: 201 - 207
Description of the hitherto unknown male of Hermilius (Copepoda: Caligidae) M. Shahul HameedN. Krishna Pillai OriginalPaper Pages: 209 - 213
Evaluation of materials for use in algal culture systems Carol JusticeSteven MurrayJan Scherfig OriginalPaper Pages: 215 - 221
An evaluation of certain indices of eutrophy and maturity in lakes Robert W. Winner OriginalPaper Pages: 223 - 245
A modified sedimentation system for counting algae with an inverted microscope J. H. Evans OriginalPaper Pages: 247 - 250
Hatching and Postembryonic Development of Streptocephalus Dichotomus Baird (Crustacea : Anostraca) Miss R. Bernice OriginalPaper Pages: 251 - 278
A population of Rivulogammarus fossarum Koch (Amphipoda) in a Small Fishless Stream Petr OBrdlík OriginalPaper Pages: 279 - 295