Author
Geological Survey (U.S.)
173
Geological Survey (U.S.),
150
United States. Bureau of Land Management
60
United States. Bureau of Reclamation
54
Rocky Mountain Research Station (Fort Collins, Colo.)
41
University of Colorado Boulder. Natural Resources Law Center
39
United States. Forest Service
36
Rocky Mountain Research Station (Fort Collins, Colo.),
29
EBSCOhost
27
Films for the Humanities & Sciences (Firm)
24
Infobase
24
United States. Bureau of Land Management,
22
United States. Congress. Senate. Committee on Energy and Natural Resources
20
U.S. Atomic Energy Commission. Division of Raw Materials
18
United States. Forest Service. Intermountain Region
18
Intermountain Research Station (Ogden, Utah)
17
Pacific Northwest Research Station (Portland, Or.)
17
United States. Congress. House. Committee on Resources
17
Time-Life Books
16
Western Water Assessment (Program)
15
Lewis, Meriwether, 1774-1809
14
United States. Congress. House. Committee on Natural Resources,
14
University of Colorado Boulder. Center of the American West
14
National Renewable Energy Laboratory (U.S.)
13
Remington, Frederic, 1861-1909
13
United States. National Park Service
13
Hafen, LeRoy R. 1893-1985
12
U.S. Fish and Wildlife Service
12
United States. Department of the Interior
12
United States. Forest Service,
12
Arts and Entertainment Network
11
Clark, William, 1770-1838
11
Colorado State University. Department of Agricultural and Resource Economics
11
Limerick, Patricia Nelson, 1951-
11
United States. Bureau of Mines
11
United States. Congress. Senate. Committee on Energy and Natural Resources,
11
Brown, Dee, 1908-2002
10
Colorado State University. Extension
10
United States. Congress. House. Committee on Natural Resources
10
Etulain, Richard W.
9
Frémont, John Charles, 1813-1890
9
Kenney, Douglas S., 1964-
9
MacDonnell, Lawrence J.
9
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
9
United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Water and Power,
9
United States. Congress. Senate. Committee on Indian Affairs (1993- )
9
United States. National Park Service,
9
Adams, Ramon F. 1889-1976
8
Buffalo Bill, 1846-1917
8
Pacific Southwest Research Station
8
more ...