Scum formation in a nutrient removing activated sludge plant

The nutrient status of the Swartkops River estuary, Eastern Cape

Note on procedures for the large-scale transportation of juvenile fish

Letters to the Editor: Scum formation in a nutrient removing activated sludge plant

The chemical composition of Transkei dam water

Isotopic and chemical aspects of nitrate in the groundwater of the Springbok Flats

Phosphorus budget models for simulating the fate of phosphorus in South African reservoirs

The identification of heterotrophic bacteria in an activated sludge plant with particular reference to polyphosphate accumulation

Least-squares analysis of settling data under discrete settling conditions

Removal of phosphate and nitrogen compounds from biological filter effluents