- Matson, Walter E.21
- Oregon State University. Extension Service17
- University Of Idaho. Cooperative Extension Service3
- Capizzi, Joseph2
- Macswan, Iain C.2
- Mansour, N. S.2
- Pacific Northwest Cooperative Extension2
- United States. Department Of Agriculture2
- Washington State University. Cooperative Extension2
- Eburne, Norman1
- Hellickson, Martin L.1
- Lyngstrand, Pete1
- Oregon State University. Cooperative Extension Service1
- Richardson, D. G.1
- Richardson, D. G. (Daryl G.)1
- Washington State University. Extension Service1
- Western Regional Agricultural Engineering Service1
- Willrich, Ted L.1