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United Nations Environment Programme ,  United Nations Educational, Scientific and Cultural Organization ,  [Methodology for Assessment and Control of Coastal Erosion in West and Central Africa: UNEP Regional Seas Reports and Studies No. 107] ,  Methodology for Assessment and Control of Coastal Erosion in West and Central Africa: UNEP Regional Seas Reports and Studies No. 107

United Nations Environment Programme ,  Food and Agriculture Organization of the United Nations ,  [The Ecological Management of Arid and Semi-Arid Rangelands in Africa and the Near and Middle East (EMASAR): Formulation of an International Cooperative Programme - Report of an International Conference held in Rome] ,  The Ecological Management of Arid and Semi-Arid Rangelands in Africa and the Near and Middle East (EMASAR): Formulation of an International Cooperative Programme - Report of an International Conference held in Rome