Morges, Switzerland : Published for National Parks Centennial Commission by International Union for Conservation of Nature and Natural Resources, 1974
Physical Details
504 pages : illustrations ; 26 cm
OCLC
ocm00976698
"Proceedings of a conference sponsored and organized by the National Parks Centennial Commission of the United States of America; the National Park Service of the U.S. Department of the Interior; and the International Union for Conservation of Nature and Natural Resources. Cosponsors: United Nations Educational, Scientific, and Cultural Organization; Food and Agriculture Organization of the United Nations; and Natural Resources Council of America."