Segunda Conferencia Mundial sobre Parques Nacionales, Parques Nacionales de Yellowstone y Grand Teton, E.U.A., 18-27 de Septiembre de 1972 : actas
Deuxième Conférence Mondiale sur les Parcs Nationaux, Parcs nationaux de Yellowstone et de Grand Teton, Etats-Unis, 18-27 septembre 1972 : compte rendu
IUCN's twelfth Technical Meeting, Banff, Alberta, Canada, 12 to 15 September 1972 : papers and proceedings Author(s) Elliott, Hugh F. I.
A. The national park situation in southern Asia, with special reference to the role, management and economic and social function of national parks in densely populated non-industrial regions. B. Pre-conference study-tours to national parks and other are Author(s) Packard, Fred M. Elliott, Hugh F. I.
A. Conservation in land-use planning : soil and water resources especially in mountain regions : wildlife resources and forestry. B. Effects of pollution on natural ecosystems. C. Some aspects of wildlife utilization and management. D. International Bi Author(s) Elliott, Hugh F. I.
Second World Conference on National Parks, Yellowstone and Grand Teton National Parks, USA, September 18-27, 1972 : proceedings
