The effect of land usage on aquatic and semi-aquatic vegetation at high altitudes in Southern Africa A. Jacot Guillarmod OriginalPaper Pages: 3 - 13
Some effects of siltation upon aquatic macrophyte vegetation in rivers D. Edwards OriginalPaper Pages: 29 - 38
The effects of land use on freshwater fish in South Africa, with particular reference to Natal R. S. Crass OriginalPaper Pages: 38 - 38
The effects of silt and sand on the invertebrate fauna of streams and rivers F. M. Chutter OriginalPaper Pages: 57 - 76
Effect of algal extracts of Phormidium species on growth and development of rice seedlings A. B. GuptaA. C. Shukla OriginalPaper Pages: 77 - 84
Size relationships of Acroneuria californica (perlidae, plecoptera) and its prey Andrew L. Sheldon OriginalPaper Pages: 85 - 94
Contribution à la connaissance de la faune marine de la côte belge Eliane BrackiePhilip Polk OriginalPaper Pages: 100 - 125
Effect of temperature and salinity on the heat tolerance in the hermit crab, diogenes bicristimanus R. NagabhushanamR. Sarojini OriginalPaper Pages: 126 - 134