- Oregon State University. Extension Service97
- United States. Department Of Agriculture91
- Washington State University. Cooperative Extension85
- Pacific Northwest Cooperative Extension69
- University Of Idaho. Cooperative Extension Service55
- University Of Idaho. Cooperative Extension System30
- Burrill, L. C.12
- Schmall, Vicki L.11
- Washington State University. Extension10
- Trimmer, Walter L.9
- Hansen, Hugh J.8
- University Of Idaho. Extension8
- Stebbins, Robert L.7
- Fitzsimmons, Jim P.6
- Oregon State University. Cooperative Extension Service5
- Douglass, Bernard S.4
- Fisher, Glenn C.4
- Landgren, Chal G.4
- Raab, Carolyn A.4
- Straatman, Marcelle4