- Oregon State University. Extension Service7
- Pscheidt, Jay W.7
- Peachey, Ronald Edward5
- Olsen, Jeff L.4
- Walton, Vaughn M.3
- Peachey, Ed2
- Wiman, Nik G.2
- Curtis, C.1
- Johnson, K.1
- Oregon State University. Extension Servicev1
- Pytkowicz, Ricardo M. (Ricardo Marcos), 1929 1