Author
United States. National Park Service
5
American Fisheries Society
4
American Society for Horticultural Science
4
National Recreation and Park Association
4
Colorado. Game and Fish Department
3
National Conference on State Parks
3
Park Practice Program (U.S.)
3
United States. Forest Service
3
American Forestry Association
2
American Veterinary Medical Association
2
National Portrait Gallery (Smithsonian Institution)
2
National Society for Park Resources (U.S.)
2
Society for Range Management
2
Soil Science Society of America
2
U.S. Fish and Wildlife Service
2
United States. Agricultural Research Service
2
United States. Heritage Conservation and Recreation Service
2
United States. National Marine Fisheries Service
2
Agricultural History Society
1
American Chemical Society. Books and Journals Division
1
American Dairy Science Association
1
American Forests (Association)
1
American Genetic Association
1
American Horticultural Society
1
American Society of Animal Production
1
American Society of Animal Science
1
C.A.B. International. Bureau of Crop Protection
1
C.A.B. International. Institute of Parasitology
1
California Agricultural Experiment Station
1
Colorado Association for Health, Physical Education, Recreation & Dance
1
Colorado. Division of Game, Fish, and Parks
1
Colorado. Division of Wildlife
1
Colorado. Game, Fish, and Parks Department
1
Commonwealth Agricultural Bureaux
1
Commonwealth Bureau of Helminthology
1
Commonwealth Institute of Helminthology
1
Commonwealth Institute of Parasitology
1
Crop Science Society of America
1
Denver Public Library
1
Eastern Fish Disease Laboratory (U.S.)
1
Entomological Society of America
1
Fish and Wildlife Reference Service (U.S.)
1
Foreign Affairs Document and Reference Center (U.S.)
1
Grand Army of the Republic. Department of Colorado
1
Horticultural Society of New York
1
Informatics General Corporation
1
KRA Corporation
1
Lake City Writers' Forum
1
Massachusetts Horticultural Society
1
Maxima Corporation
1
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