World Conference on National Parks (1st : 1962 : Seattle, Washington).
First World Conference on National Parks : proceedings of a Conference organized by the International Union for Conservation of Nature and Natural Resources ... Seattle, Washington, June 30 - July 7, 1962 / ed. by Alexander B. Adams. - Washington, D.C. : National Park Service, United States Department of the Interior, 1962. - xxxiv, 471 p. : ill. - America's natural resources .
National parks and reserves--Congresses.
First World Conference on National Parks : proceedings of a Conference organized by the International Union for Conservation of Nature and Natural Resources ... Seattle, Washington, June 30 - July 7, 1962 / ed. by Alexander B. Adams. - Washington, D.C. : National Park Service, United States Department of the Interior, 1962. - xxxiv, 471 p. : ill. - America's natural resources .
National parks and reserves--Congresses.