The rivers of North East Scotland: physicochemical characteristics John A. H. BenzieKenneth B. PughMichael B. Davidson OriginalPaper Pages: 93 - 106
Cold hardiness of the green gemmules of Spongilla lacustris L. (Porifera: Spongillidae) Paul E. FellErika D. Levasseur OriginalPaper Pages: 107 - 112
The effect of dissolved oxygen, sediment, and sewage treatment plant discharges upon growth, survival and density of Asiatic clams Scott E. Belanger OriginalPaper Pages: 113 - 126
Description of the male of Sclerocypris tuberculata (Methuen, 1910) (Crustacea, Ostracoda, Megalocypridinae) Koen Martens OriginalPaper Pages: 127 - 131
Diacyclops languidoides (Lilljeborg, 1901) s.l. and Acanthocyclops montana, new species (Copepoda, Cyclopoida), from groundwater in Montana, USA Janet W. ReidEdward B. ReedJack A. Stanford OriginalPaper Pages: 133 - 149
Aquatic hyphomycetes of a sulphur spring K. R. ChandrashekarK. R. SridharK. M. Kaveriappa OriginalPaper Pages: 151 - 156
Effects of aluminum, calcium and low pH on egg hatching and nymphal survival of Cloeon triangulifer McDunnough (Ephemeroptera: Baetidae) Lisa M. TabakK. Elizabeth Gibbs OriginalPaper Pages: 157 - 166