Author
National Operations Center (U.S.),
United States. Bureau of Land Management,
34
Geological Survey (U.S.),
17
United States. Bureau of Land Management. Utah State Office,
7
United States. Bureau of Land Management. Arizona State Office,
6
United States. Bureau of Land Management. Montana State Office,
5
United States. Bureau of Land Management. Idaho State Office,
4
United States. Bureau of Land Management. California State Office,
2
United States. Bureau of Land Management. Nevada State Office,
2
United States. Bureau of Land Management. New Mexico State Office,
2
United States. Bureau of Land Management. Oregon State Office,
2
United States. Bureau of Land Management. Wyoming State Office,
2
United States. Bureau of Land Management. Colorado State Office,
1