Wolves for Yellowstone? : a report to the United States Congress
John D. Varley (Editor), Wayne G. Brewster (Editor), United States Congress (101st : 1989-1990), Yellowstone National Park (Agency : U.S.) (Author, Issuing body), U.S. Fish and Wildlife Service (Author)
Vol. 3-4 edited by John D. Varley and Wayne G. Brewster; Sarah E. Broadbent and Renee Evanoff, technical editors
Print Book, English, 1990
[National Park Service?], [Yellowstone National Park], 1990