R. B. Isely, Okun, D. A., Hafner, C. R., Talbert, T., Kupper, M. L., and Shiffman, M. A.,
“Participants manual for sessions on water supply and sanitation : USAID Workshop on Primary Health Care in Africa, November 15-20, 1981, Lome, Togo”, vol. no. 13. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. iii, 137, 23 p.: fig., tab., 1982.
