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United Nations Environment Programme ,  [Can Desert Encroachment Be Stopped? A Study with Emphasis on Africa - Ecological Bulletins No. 24] ,  Can Desert Encroachment Be Stopped? A Study with Emphasis on Africa - Ecological Bulletins No. 24

United Nations Environment Programme ,  Food and Agriculture Organization of the United Nations ,  [Inventory and Monitoring of Sahelian Pastoral Ecosystems: Senegal - GEMS Sahel Series Main Report] ,  Inventory and Monitoring of Sahelian Pastoral Ecosystems: Senegal - GEMS Sahel Series Main Report

United Nations Environment Programme ,  United Nations Development Programme ,  [UNEP/UNDP/DUTCH Joint Project on Environmental Law and Institutions in Africa: Studies in Environmental Policy and Law in Malawi] ,  UNEP/UNDP/DUTCH Joint Project on Environmental Law and Institutions in Africa: Studies in Environmental Policy and Law in Malawi

United Nations Development Programme ,  United Nations Environment Programme ,  United Nations Department of Technical Cooperation Development ,  [Transnational Project on the Major Regional Aquifer in North-East Africa: Proceedings of project Workshop] ,  Transnational Project on the Major Regional Aquifer in North-East Africa: Proceedings of project Workshop