Author
National Operations Center (U.S.),
United States. Bureau of Land Management,
372
Geological Survey (U.S.),
220
United States. Bureau of Land Management. Oregon State Office,
61
United States. Bureau of Land Management. Montana State Office,
59
United States. Bureau of Land Management. California State Office,
45
United States. Bureau of Land Management. Arizona State Office,
37
United States. Bureau of Land Management. New Mexico State Office,
36
United States. Bureau of Land Management. Colorado State Office,
29
United States. Bureau of Land Management. Idaho State Office,
26
United States. Bureau of Land Management. Nevada State Office,
26
United States. Bureau of Land Management. Utah State Office,
24
United States. Bureau of Land Management. Wyoming State Office,
24
Geological Survey (U.S.)
3
United States. Bureau of Land Management. Nevada State Office
3
United States. Bureau of Land Management. Colorado State Office
2
United States. Bureau of Land Management
1
United States. Bureau of Land Management. California Desert District,
1