Author
United States. Bureau of Land Management
Geological Survey (U.S.)
585
National Operations Center (U.S.)
465
National Science and Technology Center (U.S.)
141
United States. Bureau of Land Management. Montana State Office
115
United States. Bureau of Land Management. New Mexico State Office
103
United States. Bureau of Land Management. Colorado State Office
88
United States. Bureau of Land Management. Wyoming State Office
83
United States. Bureau of Land Management. Oregon State Office
52
United States. Bureau of Land Management. Arizona State Office
44
United States. Bureau of Land Management. California State Office
41
United States. Bureau of Land Management. Nevada State Office
41
United States. Bureau of Land Management. Idaho State Office
33
United States. Bureau of Land Management. Utah State Office
30
National Applied Resource Sciences Center (U.S.)
28
Colton, Roger B. 1924-
18
Berryhill, Henry L., Jr. 1921-2013
17
Montana Bureau of Mines and Geology
15
United States. Forest Service
15
Trippet, Anita R.
14
University of Texas at Austin. Bureau of Economic Geology
13
United States. National Park Service
12
United States. Bureau of Land Management. California Desert District
11
Derkey, Pamela Dunlap
8
Idaho Bureau of Mines and Geology
8
Wyoming. Game and Fish Department
8
Geological Survey (U.S.),
6
Luft, Stanley Jeremie, 1927-
5
Palmer, Pamela, 1953-
4
United States. Forest Service. Rocky Mountain Region
4
Lewis, Barney D.
3
Meier, Donald H.
3
Pacific Crest Trail Association
3
Utah. Division of Parks and Recreation
3
Billingsley, George H.
2
Heffern, Edward L.
2
Schaefer, Donald H.
2
Utah
2
Bannister, C. A.
1
Bohannon, Robert G.
1
Brogden, Robert E.
1
Bryant, Bruce, 1930-
1
Chazin, Barbara
1
Cole, Elizabeth F.
1
Cole, Elizabeth F.,
1
Colorado Geological Survey
1
Colorado. Division of Game, Fish, and Parks
1
Colorado. Game, Fish, and Parks Department
1
Colorado. State Board of Land Commissioners
1
Crompton, E. James
1
more ...