Author
U.S. Fish and Wildlife Service
Geological Survey (U.S.),
179
Geological Survey (U.S.)
114
National Wildlife Refuge System (U.S.)
68
United States. Bureau of Reclamation
58
United States. Bureau of Land Management
51
United States. National Park Service
47
United States. Forest Service
35
United States. Bureau of Indian Affairs
23
Colorado. Division of Wildlife
21
United States. Army. Corps of Engineers
20
United States. National Oceanic and Atmospheric Administration
18
Siskiyou Resource Conservation District
15
Eisler, Ronald, 1932-
14
United States. Environmental Protection Agency
14
United States. National Marine Fisheries Service
14
United States. Natural Resources Conservation Service
12
Great Northern Corporation
10
Black, Gary
9
Colorado Natural Heritage Program
9
National Wetlands Inventory (U.S.)
9
Neckles, Hilary A. 1957-
9
Patuxent Wildlife Research Center
9
Galveston Bay Foundation
8
Dahl, Thomas E.
7
Ringelman, James K.
7
Bullock, G. L.
6
Canadian Wildlife Service
6
Charles M. Russell National Wildlife Refuge (Agency : U.S.)
6
Hoopa Valley Business Council. Tribal Fisheries Department
6
International Association of Fish and Wildlife Agencies
6
Kincaid, Harold L.
6
Salmon River Restoration Council
6
United States. Environmental Protection Agency. Office of Research and Development
6
California. Department of Fish and Game
5
McGarigal, Nancy
5
National Ecology Research Center (U.S. Fish and Wildlife Service)
5
North Slope Borough (Alaska)
5
Recovery Program for Endangered Fish of the Upper Colorado River Basin
5
Reed, Porter B.
5
Rhode Island. Department of Environmental Management
5
U.S. Fish and Wildlife Service. Region 4
5
United States. Federal Energy Regulatory Commission. Office of Energy Projects
5
United States. National Biological Service
5
Alaska
4
Butler, David L. 1946-
4
Coates, Peter S.,
4
Elrod, Jack
4
Fredrickson, Leigh H.
4
Friend, Milton
4
more ...