1. A.W.T. Barenbrug, 1965. Psychrometry and psychrometric charts. Transvaal and O.F.S. Chamber of Mines. Johannesburg.
2. Handbook of Industrial Water Conditioning;Betz,1980
3. Geochemisty;Brownlow,1979
4. Mechanism and Control of Scale Formation in Sea Water Distillation
5. Bacterial Oxidation of Witwatersrand Slimes;Mrost,1980