Allozyme variation in a Johnston’s topminnow, Aplocheilichthys johnstoni, population from the Zambezi River system
Current-use insecticides, phosphates and suspended solids in the Lourens River, Western Cape, during the first rainfall event of the wet season
The engineering characteristics of important Southern African rock types with emphasis on shear strength of concrete dam foundations
Detergent phosphorus in South Africa: Impact on eutrophication with specific reference to Mgeni Catchment