Montana Fish, Wildlife & Parks, YNP, USGS, USFS,
Lemke, Thomas O., 1949-
Montana. Dept. of Fish, Wildlife, and Parks.
United States. National Park Service.
Geological Survey (U.S.)
United States. Forest Service.
MAMMALS-BOVIDAE-SHEEP(LEMKE)
Northern Yellowstone cooperative bighorn sheep survey 1998
Northern Yellowstone cooperative bighorn sheep survey 1998
Northern Yellowstone cooperative bighorn sheep survey 1998