Author
United States. Forest Service
320
United States. Department of Agriculture. Economic Research Service
286
United States. Department of Agriculture
244
United States. Soil Conservation Service
188
U.S. Fish and Wildlife Service
123
National Agricultural Library (U.S.)
94
United States. Animal and Plant Health Inspection Service
82
United States. General Accounting Office
82
United States. Agricultural Research Service
72
Pacific Northwest Research Station (Portland, Or.)
66
United States. National Park Service
62
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
61
Northeastern Forest Experiment Station (Radnor, Pa.)
54
Rocky Mountain Research Station (Fort Collins, Colo.)
52
United States. Congress House
52
Forest Products Laboratory (U.S.)
42
North Central Forest Experiment Station (Saint Paul, Minn.)
41
United States. Congress. House. Committee on Agriculture
39
Intermountain Research Station (Ogden, Utah)
37
United States. Bureau of Land Management
35
Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
31
Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
29
United States. Bureau of Sport Fisheries and Wildlife
29
United States. Forest Service. Southern Research Station
29
United States. Science and Education Administration
28
Betts, Harold S. (Harold Scofield)
27
United States. Natural Resources Conservation Service
27
United States. National Marine Fisheries Service
26
Southeastern Forest Experiment Station (Asheville, N.C.)
25
United States. Congress. Office of Technology Assessment
24
United States. Dept. of Agriculture. Economic Research Service
21
United States. Extension Service
20
United States. Department of State. Office of Public Communication. Editorial Division
18
United States. Department of the Interior
18
Intermountain Forest and Range Experiment Station (Ogden, Utah)
16
Southern Forest Experiment Station (New Orleans, La.)
15
Technology & Development Program (U.S.)
15
United States. Cooperative State Research Service
15
MacLean, Jayne T.
13
Texas Agricultural Experiment Station
13
United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs
13
United States. Bureau of Plant Industry, Soils, and Agricultural Engineering
13
United States. Environmental Protection Agency
13
Cole, David N.
12
Oklahoma Agricultural Experiment Station
12
United States. Congress. House. Select Committee on Conservation of Wildlife Resources
12
Evans, Carson D.
11
U.S. Fish and Wildlife Service. Division of Federal Aid
11
United States. Animal and Plant Health Inspection Service. Veterinary Services
11
United States. Department of Agriculture. Economics, Statistics, and Cooperatives Service
11
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