Some population characteristics of the northern Yellowstone bison herd during the winter of 1988-1989
By: prepared by Helga Ihsle Pac [and] Kevin Frey.
Contributors: Frey, Kevin.; Montana. Dept. of Fish, Wildlife, and Parks.
Publisher: Montana Department of Fish, Wildlife & Parks
Published: 1991
Place of publication: [Helena?]
Subjects: American bison -- Yellowstone National Park -- Management.