Author
Geological Survey (U.S.)
846
Geological Survey (U.S.),
441
United States. Bureau of Land Management
205
United States. Bureau of Land Management. Montana State Office
155
Montana Bureau of Mines and Geology
122
National Operations Center (U.S.)
98
Colton, Roger B. 1924-
72
U.S. Fish and Wildlife Service
64
United States. Bureau of Land Management,
55
United States. Bureau of Land Management. Montana State Office,
54
National Operations Center (U.S.),
51
United States. Forest Service
49
United States. National Park Service
38
Intermountain Research Station (Ogden, Utah)
33
Montana. Department of Natural Resources and Conservation
29
United States. Bureau of Indian Affairs
29
United States. Forest Service,
29
United States. Natural Resources Conservation Service,
29
McGraw, J. P.
28
United States. Bureau of Mines
27
U.S. Atomic Energy Commission
26
Berg, Richard B., 1937-
24
Feltis, R. D. 1930-
24
Parrett, Charles
24
United States. Congress. Senate. Committee on Energy and Natural Resources,
24
Becraft, George E. 1922-
21
Museum of the Plains Indian and Crafts Center (U.S.)
21
United States. Forest Service. Northern Region
21
Rocky Mountain Research Station (Fort Collins, Colo.)
20
Harrison, Jack Edward, 1924-
18
Tysdal, Russell G.
18
U.S. Fish and Wildlife Service,
18
Mudge, Melville R., 1921-2009
17
Parrett, Charles,
17
U.S. Atomic Energy Commission. Division of Raw Materials
17
United States,
17
United States. Congress. Senate. Committee on Energy and Natural Resources
17
United States. Congress. Senate. Committee on Indian Affairs (1993- )
17
Durst, S. L.
16
Sahinen, Uuno M. 1906-
16
U.S. Atomic Energy Commission,
16
Roberts, Albert Eugene, 1921-
15
United States. Bureau of Reclamation
15
United States. Environmental Protection Agency
15
United States. National Park Service. Natural Resource Stewardship and Science,
15
United States. Congress. House. Committee on Resources
14
Luft, Stanley Jeremie, 1927-
13
Montana. Department of Environmental Quality
13
National Science and Technology Center (U.S.)
13
Ruppel, Edward Thompson, 1925-
13
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