America's national parks and their keepers

Ronald A. Foresta
Bok · Engelsk · 1984

Utgitt	Washington, D.C. : Resources for the Future , c1984
Omfang	xiv, 382 s. : ill.
Emner	National parks and reserves - United States. United States. - National Park Service. nasjonalparker usa
ISBN	0915707020. - 0915707039