1980
American Water Works Association -Denver, CO, US, AWWA,
«PVC pipe : design and installation», vol. no. M23. American Water Works Association, Denver, CO, USA, p. v, 89 p.: fig., tab., 1980.
P. H. National W. City,
«Rural water supply. Vol. III : Operation and maintenance manual». National Water Resources Council, Quezon City, The Philippines, p. xvi, 96 p.: 25 fig., 10 tab., 1980.
S. E. V. I. A. K. - Stockholm, Stockholm, S. E. S. I. D. A. -, y Water, Eand Minera,
«[Study on implementation plans for rural water supply in the Lake regions : final report]. Annex 3 : Mara implementation plan : rural water supply progress report». VIAK, Stockholm, Sweden, p. 54, 2, 9 p., 1980.
N. Ministry o NP, Kathmandu, N. P. Water Supp, y NP, N. Ministry o,
«Ten year plan for the provision of drinking water supply and sanitation». Nepal, Ministry of Housing and Physical Planning, Department of Water Supply and Sewerage, Kathmandu, Nepal, p. 85 p.: fig., map, schemes, tab., 1980.
R. E. Bigelow, Chiles, L., C. Ayad, S., Cavanagh, B., Manzer, C., y Bohumolski, C.,
«Tunisia : Care water projects ((microfiche))», vol. no. 10. USAID, Washington, DC, USA, p. 59 p. in various pagings, 1980.
1979
N. Department NP, Pokhara, N. P. Central Pa, y UNICEF -New York, NY, US,
«Drinking water and sanitation workshop : 19th & 20th November, 1979». Central Panchayat Training Centre, Pokhara, Nepal, p. 32 p., 1979.
I. Burton,
«Policy directions for rural water supply in developing countries», vol. no. 4. USAID, Washington, DC, USA, p. vii, 43 p. : fig., tab., 1979.