Aerial wolf survey, Mount McKinley National Park, McKinley Park, Alaska, March 3-7, April 29-May 2, 1968
Prasil, Richard G., author.
United States. National Park Service. Alaska Field Office, issuing body.
[Richard G. Prasil].
Aerial wolf survey, Mount McKinley National Park, McKinley Park, Alaska, March 3-7, April 29-May 2, 1968