Creator
- Oregon State University. Agricultural Experiment Station159
- Oregon State University144
- Oregon State University. Extension Service88
- Oregon State University. College Of Forestry58
- Oregon State College. Agricultural Experiment Station53
- Oregon State University. Forest Research Laboratory38
- U.S. International Biological Program. Coniferous Forest Biome38
- Et Al.35
- Lane County Historical Society (Or.)31
- Oregon State University. Malheur Experiment Station31
- United States. Agricultural Research Service31
- United States. Bureau Of Land Management31
- Klamath Falls Resource Area29
- Tunnock, Scott29
- United States. Forest Service. Northern Region. State & Private Forestry29
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club28
- Baker, C. Scott26
- Oregon. Dept. Of Geology And Mineral Industries25
- Oregon. Department Of Fish And Wildlife24
- University Of Washington24