Second World Conference on National Parks, Yellowstone and Grand Teton National Parks, USA, Septembe - detaljert visning

Second World Conference on National Parks, Yellowstone and Grand Teton National Parks, USA, September 18-27, 1972 : proceedings ... [&c]


Utgitt	Morges : Published for National Parks Centennial Commission by International Union for Conservation of Nature and Natural Rseources , 1974
Omfang	504 s. : ill.
Emner	Nasjonalparker Naturreservater nasjonalparker naturreservater