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Author/Creator
- Food and Agriculture Organization of the United Nations184
- ebrary, Inc162
- United States. Forest Service95
- SpringerLink (Online service)89
- Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)72
- Project Muse45
- U.S. Fish and Wildlife Service38
- ProQuest (Firm)33
- Center for International Forestry Research26
- British Columbia. Forest Science Program23
- United States. National Park Service22
- Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)21
- International Development Research Centre (Canada)20
- International Union for Conservation of Nature and Natural Resources20
- United States. Forest Service. Pacific Northwest Region18
- United States. General Accounting Office18
- Resources for the Future17
- Rocky Mountain Research Station (Fort Collins, Colo.)17
- United States. Bureau of Land Management17
- Poffenberger, Mark, 1950-16