South Africa. Dept. of National Health and Population Development, South African Council for Scientific and Industrial Research, Health Aspects of Water Supply Project Advisory Committee, National Institute for Water Research, Hattingh, W. H. J., Morgan, W. S. G., & Nupen, E. M. (1985). Health aspects of water supply: Ten-year report. National Institute for Water Research, Council for Scientific and Industrial Research.

South Africa. Dept. of National Health and Population Development, South African Council for Scientific and Industrial Research, Health Aspects of Water Supply Project Advisory Committee, National Institute for Water Research, W. H. J. Hattingh, W. S. G. Morgan, and Ethel M. Nupen. Health Aspects of Water Supply: Ten-year Report. Pretoria, South Africa: National Institute for Water Research, Council for Scientific and Industrial Research, 1985.

South Africa. Dept. of National Health and Population Development, et al. Health Aspects of Water Supply: Ten-year Report. National Institute for Water Research, Council for Scientific and Industrial Research, 1985.