Water filter for your home. Technical guide (1987) Sadzik, P.; National Institute for Water Research; CSIR; Appropriate Technology Division; South Africa, Department of Health and Population Development
Solid waste management in South Africa (1979) CSIR Technical Guide K47; National Institute for Water Research; CSIR Council for Scientific and Industrial Research; Tworeck, W.C.
The composting of urban refuse (1971) WNNR CSIR Technical Guide K19; National Institute for Water Research; CSIR Council for Scientific and Industrial Research; Cillie, G.G.