- Oregon State University. Extension Service25
- Oregon State University. Agricultural Experiment Station14
- Schmall, Vicki L.7
- Oregon State University. Forest Research Laboratory6
- Hare, Jan5
- Pacific Northwest Cooperative Extension4
- United States. Department Of Agriculture4
- Burt, Lawrence A.3
- University Of Idaho. Extension3
- Washington State University. Cooperative Extension3
- Washington State University. Extension3
- Wirth, M. E. (Myron E.), 1928 3
- Bowman, Sally R., 1949 2
- Columbia Basin Agricultural Research Center2
- Filip, Gregory M.2
- Kershaw, Nancy2
- Pratt, Clara C.2
- United States. Agricultural Research Service2
- United States. Forest Service2
- University Of Idaho. Cooperative Extension System2