L. T. Bates,
“A reassessment of economic criteria for rural water supply improvements : a case study of Kenya”. Duke University, Department of Forestry and Environmental Studies, Durham, NC, USA, p. iii, 81 p.: fig., tab., 1987.
C. H. P. E. E. M. - Geneva,
“Report of the seventh meeting : Rome, 7-11 September 1987”. Joint WHO/FAO/UNEP Panel of Experts on Environmental Management for Vector Contr, Geneva, Switzerland, p. 72 p.: fig., tab., 1987.
A. A. Churchill,
Rural water supply and sanitation : time for a change, vol. 18. Washington, DC, USA: World Bank, 1987, p. xvi, 111 p.: fig., tab.
B. W. World Bank Gaborone, Gaborone, B. W. U. N. D. P. -, BW, B. Ministry o, and Oslo, N. O. Hifab Inte,
“Sanitation sector management study : final report”. Hifab International, Oslo, Norway, p. 80 p.: fig., tab., 1987.
M. G. Beyer,
“Water and sanitation in UNICEF 1946-1986”, vol. no. 8. UNICEF, New York, NY, USA, p. II, 67 p., 1987.
UN Economic Commission for Asia and the Pacific -Bangkok,TH, ESCAP,
Water resources development in Asia and the Pacific : some issues and concerns, vol. no. 62. New York, NY, USA: United Nations, 1987, p. vi, 202 p.: fig., tab.