- Oregon State University. Extension Service10
- James, Robert L.5
- Oregon State College. Agricultural Experiment Station5
- Oregon State University. Forest Research Laboratory5
- Filip, Gregory M.3
- Hann, David W.3
- Stewart, C. A.3
- United States. Forest Service. Northern Region. State & Private Forestry3
- Byler, James W.2
- Christensen, Neil Walter, 1944 2
- Duddles, Ralph E.2
- Jackson, T. L. (Thomas Lloyd), 1922 2
- Powelson, R. L.2
- United States. Forest Service. Northern Region2
- Alejandro Castro, Mabel1
- Alzugaray Oswald, Patricio Javier1
- Amaranthus, Michael P.1
- Bae, Hanhong1
- Berg, Alan B.1
- Berry, Dick Wallace, 1914 1