- Oregon State University. Extension Service7
- United States. Forest Service7
- Schmall, Vicki L.3
- Elwood, Norman E.2
- Graves, Henry Solon, 1871 19512
- Oregon State University. Forest Research Laboratory2
- Pratt, Clara C.2
- United States. Forest Service. Division Of Engineering2
- United States. Forest Service. Pacific Northwest Region2
- Apel, Mark1
- Ashton, Rebecca H.1
- Bettinger, Pete, 1962 1
- Bohnert, David1
- California. Division Of Forestry1
- Chamberlain, David1
- Cleland, Marilyn1
- Cowlitz Valley Ranger District (Agency : Wash.)1
- Deyoe, David R.1
- Diaz, Nancy M.1
- Dunham, Sarah E.1