Effect of pollutants on the physiology of fish in the Olifants River (Eastern Transvaal) Effect of pollutants on the physiology of fish in the Olifants River (Eastern Transvaal)
Guide to common filamentous freshwater macroalgae in South Africa Guide to common filamentous freshwater macroalgae in South Africa
Conceptual design report for a national river water quality assessment programme Conceptual design report for a national river water quality assessment programme