1990
L. Wahadan, Dodge, C. P., Ekvall, T., and Yousif, M. A.,
“Cost effective water and sanitation in Sudan”,
Water quality bulletin, pp. p. 11-17: fig., 1990.
A. Okorafor, Okore, A., McPhail, A., and Whittington, D.,
“Cost recovery strategy for rural water delivery in Nigeria”, vol. no. 369. World Bank, Infrastructure and Urban Development Department, Washington, DC, USA, p. 36 p. : fig., tab., 1990.
R. Beck,
“Environmental profile Al Bayda Governorate, Yemen Arab Republic”. DHV, Amersfoort, The Netherlands, p. 48 p.: fig., map, photogr., 1990.
R. Beck,
“Environmental profile Dhamar Governorate, Yemen Arab Republic”. DHV, Amersfoort, The Netherlands, p. 48 p. : fig., map, photogr., 1990.
R. Beck,
“Environmental profile Tihama, Yemen Arab Republic”. DHV, Amersfoort, The Netherlands, p. 48 p. : fig., map., photogr., 1990.
F. R. C. E. F. I. G. R. E. - S. Antipolis and Geneva, C. H. Collaborat,
“ESA collaborative council meeting, Sophia Antipolis, France, November 28 - December 1, 1989 : proceedings”. ESA Collaborative Council, Environmental Health Div., World Health Organization, Geneva, Switzerland, p. various paging, 1990.
M. N. Rao,
“Evaluation of handpump programme in Karnataka”. Institute for Social and Economic Change, Bangalore, India, p. 123 p., 8 p. pl.: fig., tab., 1990.
M. N. Rao,
“Evaluation of handpump programme in Karnataka : executive summary”. Institute for Social and Economic Change, Bangalore, India, p. 11 p.: 1 map, 1990.
U. Winblad,
“Excreta disposal and the rural poor”, in
Society, environment and health in low-income countries, 1990, pp. P. 87-93 : fig., tab.
I. L. Nyumbu,
“Financing operation and maintenance of water supply systems in Zambia and Malawi”, in
Proceedings of the meeting of the Operation and Maintenance Working Group : Geneva, 19-22 June 1990. Volume 2. Case studies on operation and maintenance of rural and urban water supply systems, 1990, pp. p. 42-48.
G. B. WaterAid - London,
“Hand dug wells in Ghana”. WaterAid, London, UK, p. video (28 min.) : VHS, 1990.
L. Morin, Jost, C., and Spruijt, H. D.,
“Health benefits of water and sanitation in Rwanda”,
Water quality bulletin, pp. p. 29-35, 64: fig., tab., 1990.
R. G. Feachem, Mertens, T. E., Fernando, M. A., Cousens, S. N., Kirkwood, B. R., Merkle, F., and Korte, R.,
“Health impact evaluation of improved water supplies and hygiene practices in Sri Lanka : background and methodology”,
Tropical medicine and parasitology, pp. p. 79-88 : fig., tab., 1990.
J. G. Monney,
“Human resources development analysis : rural water supply and sanitation sector study”. Kwame Nkrumah University of Science and Technology, Training Network Centre, Kumasi, Ghana, p. 63 p.: tab., 1990.