Biblio

UNDP -New York, NY, US, Lima, P. E. National I., y PE, P. Ministerio, «Assessment of water resources and their use by different productive sectors in Peru». Peru, Ministry of Agriculture, National Institute of Natural Resources - INRENA, Lima, Peru, p. iv, 310, v, p. : fig., tab., maps, 1995.

UNDP -New York, NY, US y de l'Industrie, del'Hydrauli, «Synthese hydrogeologique du Mali». UNDP Department of Technical Cooperation for Development, New York, NY, USA, p. 291 p. : fig., map, tab., 1990.

UNDP -New York, NY, US, UNDTCD -New York, NY, US, y Nairobi, K. E. U. N. E. P. -, «Transnational project on the major regional aquifer in North-east Africa : proceedings of the project workshop held in Khartoum, Sudan, 12th-14th December, 1987». United Nations Department of Technical Co-operation for Development, New York, NY, USA, p. 64 p.: fig., tab., 1988.