- Oregon State University. Extension Service[remove]61
- United States. Department Of Agriculture[remove]61
- University Of Idaho. Cooperative Extension Service55
- Washington State University. Cooperative Extension54
- Pacific Northwest Cooperative Extension31
- Hansen, Hugh J.7
- Trimmer, Walter L.7
- Straatman, Marcelle5
- Mansour, N. S.4
- Schmall, Vicki L.4
- Washington State University. Cooperative Extension Service4
- Douglass, Bernard S.3
- Hilderbrand, Kenneth S.3
- Proebsting, William M.3
- Raab, Carolyn A.3
- Baggett, James R.2
- Burgett, D. M.2
- Fisher, Glenn C.2
- Gamroth, Michael J.2
- Hanley, Donald2