- Oregon State University. Extension Service46
- Washington State University. Cooperative Extension45
- United States. Department Of Agriculture43
- University Of Idaho. Cooperative Extension Service42
- Pacific Northwest Cooperative Extension26
- Hansen, Hugh J.8
- Trimmer, Walter L.8
- Schmall, Vicki L.6
- Straatman, Marcelle4
- Douglass, Bernard S.3
- Stebbins, Robert L.3
- Stiehl, Ruth E.3
- Boltes, Barbara V.2
- Gamroth, Michael J.2
- Hannaway, D. B.2
- Lindauer, Shelley Lynne Knudsen2
- Mansour, N. S.2
- Matson, Walter E.2
- Moore, James A.2
- Sander, Gary H.2