Author
United States. National Park Service
Geological Survey (U.S.)
123
U.S. Fish and Wildlife Service
18
United States. Bureau of Land Management
18
United States. Forest Service
15
Brock, John C.
9
United States. National Aeronautics and Space Administration
8
Colorado. Division of Wildlife
7
Billingsley, George H.
6
Felger, Tracey J.
5
Priest, Susan S.
5
Southworth, Scott, 1957-
5
Audubon Colorado
4
Coastal and Marine Geology Program (Geological Survey)
4
Colorado Field Ornithologists
4
Colorado. State Board of the Great Outdoors Colorado Trust Fund
4
Playa Lakes Joint Venture
4
Rocky Mountain Bird Observatory
4
Sonoran Desert Field Station (Tucson, Ariz.)
4
Southwest Biological Science Center (U.S.)
4
United States. Bureau of Land Management. Arizona Strip District
4
United States. National Oceanic and Atmospheric Administration
4
United States. Natural Resources Conservation Service
4
University of Arizona. School of Renewable Natural Resources
4
Architectural Resources Group
3
Forest and Rangeland Ecosystem Science Center (U.S.)
3
Gibbs, Ann E.
3
Halvorson, William L. 1943-
3
Miller, Mark Eugene, 1961-
3
Nielsen, Martha G.
3
Powell, Brian F.
3
Scheirer, Daniel S.
3
Schmidt, Cecilia A.
3
Snell, Charles W.
3
Tilberg, Frederick, 1896-
3
Turner, Kenzie J.
3
United States. Bureau of Indian Affairs
3
Utley, Robert M., 1929-2022
3
Beck, David A.
2
Black Canyon Audubon Society
2
Brabets, Timothy P.
2
Brady, Amie M. G. 1975-
2
Carrara, Paul E.
2
Cochran, Susan A.
2
Colorado Natural Heritage Program
2
Colorado Sage Grouse Working Group
2
Colorado State Forest Service
2
Colorado. Division of Parks and Outdoor Recreation
2
Colorado. Parks and Wildlife
2
Cooperative Institute for Research in the Atmosphere (Fort Collins, Colo.)
2
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