World conservation strategy : living resource conservation for su stainable development - International Union for conservation of nature and natural resources .; United Nations Environment Programme; World Wildlife Fund.; Food and Agriculture Organization of the United Nations; United Nations Educational, Scientific, and Cultural Organization (Gland, Switzerland : International Union for Conservation of Natu re and Natural Resources (IUCN), 1980)
Includes bibliographical references
Keywords: Conservation of natural resources -- Economic aspects; Environmental policy; Conservation of natural resources -- International cooperation