Morgan, P.R. y Mara, D.D., Ventilated improved pit latrines : recent developments in Zimbabwe, vol. no. 3. Washington, DC, USA: World Bank, 1982, p. vi, 41 p.

Lagerund, T., «Cost of main components of water supply schemes», in Water master plans for Rukwa and Kigoma regions : interim report. Part IV. Selected working papers : A, 1981, pp. Working paper no. 18 (22 p., p. A1-A2, p. B1-B14).

Water Resources Center -Cebu City, PH y Asia Foundation -Manila, PH, «Installation manual for cylinder pump». University of San Carlos, Water Resources Center, Cebu, Philippines, p. 23, ((17)) p. of tech. drawings: fig., 1981.

National Water Resources Council -Quezon City, PH, «Rural water supply. Vol. II : Construction and installation manual». National Water Resources Council, Quezon City, The Philippines, p. xiii, 241 p.: fig., tab., 1981.

SATIS -Dakar, SN, Socially Appropiate Technology International Information Services, «Satis directory : card catalogue on buildings and construction works». Satis Communications Secretariat, c/o Tool, Amsterdam, The Netherlands, p. x, ((228)) p., 1981.

Moffat, B., «The selection of an appropriate well screen material for a developing country», in Water and waste engineering in Africa : proceedings of the 6th WEDC Conference 24-28 March 1980 at Ahmadu Bello University, Zaria, Nigeria, 1981.

Sharma, P.C. y Gopalaratnam, V.S., «Ferrocement water tank», vol. no. 2. International Ferrocement Information Center, Bangkok, Thailand, p. iii, 32 p., 1980.

BURGEAP -Paris, FR, La construction des puits en Afrique tropicale, 2nd ed.ª ed. Paris, France: BURGEAP, Bureau d'Etudes de Geologie Appliquee et d'Hydrogeologie Souterraine, 1980, p. 201 p. : fig., tab.

Mexico. Direccion de Ingenieria Sanitaria -MX. Secretaria de Salubridad y Asistencia, Manual de saneamiento : agua, vivienda y desechos, 2nd reprint.ª ed. Mexico City, Mexico: Editorial Limusa, 1980, p. ((500)) p.: fig.

Eilerts, G.S., Ingold, D.L., y Lutheran World Relief -New York, NY, US, «PMB puisard maraicher en beton = PMB shallow well construction». Lutheran World Relief, New York, NY, USA, p. 55 p. : techn.drwng, 1980.

Kemplay, J., Valve users manual : a technical reference book on industrial valves for the control of fluids. London, UK: Mechanical Engineering, 1980, p. 103 p.

Nepal. Department of Local Development -NP, SATA -Pokhara, NP, y UNICEF -Kathmandu, NP, «Concrete course», vol. no. 4. Nepal, Department of Local Development, Kathmandu, Nepal, p. 13 p. : techn.drwngs, 1979.

Kerkvoorden, R. van, «Information about the "Bandung" shallow well handpump». IWACO, Bandung, Indonesia, p. ca. 100 p.: fig., tab., photogr., 1979.

Montemayor A., H.M. y Barahona G., L.A., «Manual de diseno y construccion : galerias de infiltracion : informe preliminar de la primera etapa». Universidad de Panama, Panama City, Panama, p. vi, 129 p. : fig., 1979.

Dubbeldam, F., «Research on reservoir tank constructions in Nepal». Appropriate Technology Group of German Volunteer Service, Kathmandu, Nepal, p. 34 p. ; fig., tab., 1979.

Nepal. Department of Local Development -NP, SATA -Pokhara, NP, y UNICEF -Kathmandu, NP, «Stone masonry course», vol. no. 2. Nepal, Department of Local Development, Kathmandu, Nepal, p. 29 p. : techn.drwngs, 1979.

Dunham, D.C., «Fresh water from the sun : family-sized solar still technology : a review and analysis». USAID, Office of Health, Washington, DC, USA, p. 174 p.: 27 fig., 7 maps, 4 tab., 1978.

Stanley, D., «The Arusha windmill : a construction manual». Volunteers in Technical Assistance, Arlington, VA, USA, p. 58 p. : fig. photogr., tab., 1977.

Bliek, A., «De zuigerpomp : een bouwbeschrijving». Tool, Amsterdam, The Netherlands, p. 18 p. : 8 photogr. : technical drwngs, 1977.

Koegel, R.G., Self-help wells, vol. no. 30. Rome, Italy: Food and Agriculture Organization (FAO), 1977, p. 78 p. : 56 fig., photogr.

WHO. Regional Office for South-East Asia -New Delhi, IN, SEARO, «The Bangalore pump». World Health Organization South-East Asia Regional Office, New Delhi, India, p. ii, 43 p. : 12 plates, 4 tab., 5 techn.drwngs, 1976.

Wood, A.D. y Richardson, E.V., «Design of small water storage and erosion control dams». Colorado State University, Fort Collins, CO, USA, p. ix, 79 p. : 40 fig, 1975.

World Council of Churches -Geneva, CH, «Technical study on a windmill pump». World Council of Churches, Geneva, Switzerland, p. ca, 70 p. : techn. drwng, 1975.

France. Ministere des Relations Exterieures, Cooperation et Developpement -FR y Societe Generale des Techniques Hydro-agricoles -Paris, FR, SOGETHA, Les ouvrages d'un petit reseau d'irrigation, 2nd ed.ª ed. Paris, France: France, Ministere des Relations Exterieures, Cooperation et Developpement, 1974, p. 192 p. : fig., tab.

France. Secretariat d'Etat aux Affaires Etrangeres -Paris, FR y Societe Generale des Techniques Hydro-agricoles -Paris, FR, SOGETHA, Les ouvrages en gabions, 2nd ed.ª ed. Paris, France: France, Secretariat d'Etat aux Affaires Etrangeres, 1974, p. vi, 122 p. ; fig.