A. Inversin,
Hydraulic ram. Arlington, VA, USA: Volunteers in Technical Assistance, 1985, p. 55 p.: ill.
R. B. Isely,
“Low cost water supply and sanitation technologies, community participation, and health and socio-economic outcomes : an analysis of interrelationships”. UNICEF Water, Environment and Sanitation Section, New York, NY, USA, p. 78 p.: fig., tab., 1985.
B. E. A. T. O. L. - Leuven, Helvetas -Zurich, CH, Swiss Association for International Cooperation, and Gallen, C. H. S. K. A. T. - St.,
Manuel technique pour l'approvisionnement en eau des zones rurales : avec de nombreux dessins detailles, 3th ed.rd ed. St. Gallen, Switzerland: SKAT (Swiss Centre for Development Cooperation in Technology and Management), 1985, p. 183 p.: fig., tab.