1990
J. T. Visscher y Lee, M. D.,
«Water harvesting in five African countries», vol. no. 14. IRC, The Hague, The Netherlands, p. xiii, 108 p.: fig., tab., 1990.
G. B. Internatio London, Newsletter, W. Industry I., y 90, A. Water Tech,
«Water in Africa - the next decade : 4th African Water Technology Conference, 20-22 February 1990, Kenyatta International Conference Centre, Nairobi, Kenya». International Conferences and Exhibitions, S.l., p. 153 p. : fig., tab., 1990.
J. B. Doolette y Magrath, W. B.,
Watershed development in Asia : strategies and technologies, vol. no. 127. Washington, DC, USA: World Bank, 1990, p. viii, 227 p.: fig., tab.
1989
P. Roark, Donnelly-Roark, P., y Yacoob, M.,
«Developing sustainable community water supply systems : key questions for African Development Foundation applicants», vol. no. 4. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ii, 45 p.: fig., tab., 1989.
N. L. Euroconsul Arnhem, IN, I. Ministry o, Nijmegen, N. L. Royal Hask, Delhi, I. N. Iramconsul, DGIS, D. General fo, y Bombay, I. N. A. I. C. -,
«Environmental and Sanitary Engineering Project in Kanpur and Mirzapur Under Ganga Action Plan : mid term status report». Netherlands, Ministry of Foreign Affairs, DGIS, The Hague, The Netherlands, p. 151 p. : fig., 1989.
P. Buijs, Silva, H., y Burdman, G. M.,
«Evaluation of the CARE water supply and sanitation project in the Dominican Republic», vol. no. 261. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xii, 114 p.: fig., tab., 1989.
P. Roark, Donnelly-Roark, P., y Yacoob, M.,
«Mise en place de systemes durables d'alimentation en eau : questions cle pour les demandes faites aupres de la Fondation Africaine de Developpement», vol. no. 4. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ii, 50 p.: tab., 1989.
C. Polprasert,
Organic waste recycling. Chichester, UK: Wiley, 1989, p. xiv, 357 p.: fig., tab.
WHO -Geneva, CH, World Health Organization,
«Principles and models to achieve sustainable community water supply and to extend household sanitation : report of the fourth Consultation on Institutional Development : Working Group on Cost Recovery, Geneva, 21-25 November 1988. Volume II». World Health Organization (WHO), Geneva, Switzerland, p. 11, 39 p. : fig., tab., 1989.
K. E. Groundwate Nairobi,
«Well siting guide», vol. vol. 2. Groundwater Survey (Kenya), Nairobi, Kenya, p. 60 p. + 20 p. ann.: fig., tab., 1989.