1990
C. de Jong-Boon,
«Environmental problems in Sudan : a reader». Institute of Social Studies, Research and Project Office, The Hague, The Netherlands, p. 2 vol. (xxi, 819 p.): fig., map, tab., 1990.
M. Strauss y Blumenthal, U. J.,
«Human waste use in agriculture and aquaculture : utilization practices and health perspectives : executive summary», vol. no. 09/90. International Reference Centre for Waste Disposal, Duebendorf, Switzerland, p. viii, 52 p.: fig., photogr., tab., 1990.
Office National de l'Eau Potable -Rabat, MA, ONEP,
«Les economies d'eau». Office National de l'Eau Potable, ONEP, Rabat, Morocco, p. 52 p.: fig, ill., 1990.
J. Hecq y Dugauquier, F.,
Perimetres irrigues villageois en Afrique sahelienne. Ede, The Netherlands: Centre Technique de Cooperation Agricole et Rurale, 1990, p. 234 p.: fig., photogr., tab.
Office National de l'Eau Potable -Rabat, MA, ONEP,
«Water conservation strategies». Office National de l'Eau Potable, ONEP, Rabat, Morocco, p. 34 p.: ill., photogr., 1990.
J. C. Hooghart,
«Water management and remote sensing : Technical Meeting 47, Wageningen, The Netherlands, 7 November 1989», vol. no. 42. TNO Committee on Hydrological Research, The Hague, The Netherlands, p. 146 p.: fig., tab., photogr., 1990.
M. Falkenmark, Lundquist, J., y Widstrand, C.,
«Water scarcity : an ultimate constraint in Third World development : a reader on a forgotten dimension in dry climate tropics and subtropics», vol. report 14. Linkoping University, Linkoping, Sweden, p. 127 p.: fig., tab., 1990.
UNDP -New York, NY, US, World Resources Institute -Washington, DC, US, y Nairobi, K. E. U. N. E. P. -,
World resources 1990-91. New York, NY, USA: Oxford University Press, 1990, p. xiv, 383 p.: tab.
1989
I. J. Jackson,
Climate, water and agriculture in the tropics, 2nd ed.ª ed. Harlow, UK: Longman Publishers, 1989, p. xiv, 377 p.: fig., tab.
World Bank -Washington, DC, US,
Kenya : the role of women in economic development. Washington, DC, USA: World Bank, 1989, p. xxii, 171 p. : fig., tab., map.
P. Sun, Dixon, J., Jesena, C., y Aoki, T.,
«Land and water resource management in Asia : report on a seminar», vol. no. 20. World Bank, Economic Development Institute, Washington, DC, USA, p. ix, 54 p., 1989.
T. F. Shaxson, Hudson, N. W., Sanders, D. W., Roose, E., y Moldenhauer, W. C.,
Land husbandry : a framework for soil and water conservation. Ames, IA, USA: Soil and Water Conservation Society, 1989, p. 64 p.: 20 fig., 37 photogr., 2 tab.
D. General fo DGIS,
The Netherlands and the Third World : rural development. The Hague, The Netherlands: Netherlands, Ministry of Foreign Affairs, DGIS, Information Department, 1989, p. 47 p.: photogr.
P. H. Asian Deve Manila,
«Rainfed agriculture in Asia and the Pacific». Asian Development Bank, Manila, Philippines, p. x, 644 p.: fig., tab., 1989.
D. C. Das y Pandey, C. M.,
«Soil conservation for perspective water management, environment and land productivity : paper presented at the national seminar on new perspectives in water management, New Delhi». India, Ministry of Agriculture, Soil and Water Conservation Division, New Delhi, India, p. 21 p. (A3): fig., tab., 1989.