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United Nations Environment Programme ,  Food and Agriculture Organization of the United Nations ,  International Union for Conservation of Nature and Natural Resources ,  [Establishment and Management of Protected Areas in the Gobi region, Mongolian People's Republic: Report of an International Mission (May-June 1976)] ,  Establishment and Management of Protected Areas in the Gobi region, Mongolian People's Republic: Report of an International Mission (May-June 1976)