A quantitative method for ranking the water quality tolerances of benthic species Thomas M. LawrenceTodd L. Harris OriginalPaper Pages: 193 - 196
Dynamics of manganese, cadmium, and lead in experimental power plant ponds B. J. MathisT. F. CummingsChristine King OriginalPaper Pages: 197 - 206
Preliminary observation on the role of conditioning and mechanical Interference with egg masses and Juveniles in the competitive relationships Between Helisoma Durvi (Wetherby) and the Intermediate host of Schistosoma Mansoni Sambon: Biomphalaria Camerunensis (Boettger). Henry Madsen OriginalPaper Pages: 207 - 214
Population ecology of a Stratiotes aloides l. stand in a riverside lagoon in N. Sweden Gunno Erixon OriginalPaper Pages: 215 - 221
Life cycles and distribution of the aquatic gastropod molluscs Bithynia tentaculata (L.), Gyraulus albus (Muller), Planorbis planorbis (L.) and Lymnaea peregra (Muller) in relation to water chemistry G. B. J. Dussart OriginalPaper Pages: 223 - 239
Growth response of westiellopsis prolifica janet to organic substrates in light and dark S. P. AdhikaryH. Pattnaik OriginalPaper Pages: 241 - 247
Trois nouvelles especes du genre mixtacandona (ostracoda, cyprididae, candoninae) Dan L. DanielopolLjumbomir Cvetkov OriginalPaper Pages: 249 - 266
Temperature and oxygen in an Everglades alligator pond James A. Kushlan OriginalPaper Pages: 267 - 271
Aulophorus flabelliger Stephenson, 1931, a rare and interesting fresh-water Oligochaete new to Asia K. KalpanaK. Vanamala Naidu OriginalPaper Pages: 273 - 274