Author
SpringerLink (Online service)
1,268
ScienceDirect (Online service)
728
National Renewable Energy Laboratory (U.S.),
239
Geological Survey (U.S.),
186
Geological Survey (U.S.)
185
Colorado State University. Cooperative Extension Service
178
Colorado Natural Heritage Program
161
National Renewable Energy Laboratory (U.S.)
129
United States. Animal and Plant Health Inspection Service
111
United States. Congress. Senate. Committee on Energy and Natural Resources
102
U.S. Fish and Wildlife Service
74
United States. Forest Service
69
Colorado Agricultural Experiment Station
68
U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation,
64
Plant Conservation Alliance. Alien Plant Working Group,
63
Library of Congress. Congressional Research Service,
62
United States. Office of Hydropower Licensing
61
Infobase,
54
Panjabi, Susan
54
United States. Congress. Senate. Committee on Energy and Natural Resources,
54
U.S. Fish and Wildlife Service. Region 1
51
United States. National Park Service. Natural Resource Stewardship and Science,
50
United States. Agricultural Research Service
46
Feucht, James R.
44
United States. Forest Service. Rocky Mountain Region
44
Films for the Humanities & Sciences (Firm)
42
Rocky Mountain Research Station (Fort Collins, Colo.)
42
Infobase
41
Colorado State University. Extension
38
United States,
38
United States. Congress. Senate. Committee on Environment and Public Works,
37
Anderson, David G. (Botanist)
36
Colorado. Division of Disease Control and Environmental Epidemiology
35
U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research,
35
United States. Department of Energy
34
Cranshaw, Whitney
31
United States. Environmental Protection Agency
31
United States. Environmental Protection Agency. Office of Research and Development
31
United States. Congress. House. Committee on Energy and Commerce,
30
United States. Congress. House. Committee on Commerce
29
United States. Natural Resources Conservation Service,
29
Intermountain Research Station (Ogden, Utah)
28
United States. Bureau of Reclamation
28
United States. National Park Service
28
United States. Environmental Protection Agency. Office of Water
27
Pacific Northwest Research Station (Portland, Or.)
26
United States. Congress. House. Committee on Natural Resources,
26
United States. Environmental Protection Agency,
26
Decker, Karin 1959-
25
Klett, James E.
25
more ...