Descubre y comparte nuestro conocimiento público

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 ,  [Combating Desertification in the USSR: Problems and Experience] ,  Combating Desertification in the USSR: Problems and Experience