- Oregon State University. Agricultural Experiment Station181
- Oregon State University. Extension Service74
- Oregon State University. Forest Research Laboratory60
- United States. Forest Service. Northern Region48
- United States. Forest Service. Northern Region. State & Private Forestry41
- James, Robert L.40
- Fleischbein, Jane23
- United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management23
- Gibson, Kenneth E.20
- Huyer, Adriana18
- Oregon State University. Water Resources Research Institute18
- Dooling, Oscar J.15
- Schramm, Richard E.15
- United States. Agency For International Development15
- Gilbert, William E.13
- Istok, Jonathan D.13
- Mcgregor, Mark D.13
- Columbia Basin Agricultural Research Center12
- Huyer, Adriana, 1945 11
- Boersma, L.10