Observations on the production of the giant freshwater prawn, Macrobrachium rosenbergii, in the Transvaal, South Africa :
Diurnal variations in the Vaal, a turbid South African river: Physical, chemical and phytoplankton biomass characteristics
Nutrient status and water quality assessment of the Marina Glades canal system, Kromme Estuary, St Francis Bay
Evaluation of the poly- and monoculture production of the common carp Cyprinus carpio L. and the sharptooth catfish Clarias gariepinus (Burchell) in final effluent oxidation pond water of a sewage purification system