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United Nations Environment Programme ,  USSR Commission for UNEP ,  Economic and Social Commission foe Asia and the Pacific ,  [Rangeland Improvement in Arid and Semi-Mud Zones and its Environmental and Socio-Economic Aspects: Proceedings of International Seminar] ,  Rangeland Improvement in Arid and Semi-Mud Zones and its Environmental and Socio-Economic Aspects: Proceedings of International Seminar

United Nations Environment Programme ,  Intergovernmental Oceanographic Commission ,  World Meteorological Organization ,  [Consulta de Expertos Sobre el Proyecto Conjunto Coordinado Relativo a Ia Contaminacion en el Mediterraneo: Informe Resumido de Ia Reunion Celebrada] ,  Consulta de Expertos Sobre el Proyecto Conjunto Coordinado Relativo a Ia Contaminacion en el Mediterraneo: Informe Resumido de Ia Reunion Celebrada

United Nations Environment Programme ,  [Proceedings of the Second ASEAMS Scientific Symposium: RCU/EAS Technical Reports Series No.10] ,  Proceedings of the Second ASEAMS Scientific Symposium: RCU/EAS Technical Reports Series No.10