Contribution to Book
University of Wyoming
Mark S. Boyce, Larry D. Hayden-Wing
North American elk : ecology, behavior, and management
Collins, William B.; Urness, Philip J. 1979. Elk Pellet Group Distributions and Rates of Deposition in Aspen and Lodgepole Pine Habitats. North American Elk: Ecology, Behavior and Management. 140-144.