- Oregon State University. Extension Service6
- Oregon State University. Agricultural Experiment Station5
- Buchanan, Shepard C.2
- Pacific Northwest Cooperative Extension2
- United States. Forest Service. Northern Region. State & Private Forestry2
- Appleby, Arnold P.1
- Bennett, D. D.1
- Berry, Ralph E. (Ralph Eugene), 1940 1
- Brewster, Bill D.1
- Burridge, Judith Steele1
- Condon, Edward J.1
- Engesser, William Frederick, 1910 1
- Gibson, Kenneth E.1
- Idaho Agricultural Experiment Station1
- Jackson, P. L. (Philip L.)1
- Larsen, Fenton E.1
- Mcgregor, Mark D.1
- Mckinley, Randolph A.1
- Michalson, E. L.1
- Moe, Debra K.1