Creator
- Becker, Manning H. (Manning Henry), 1922 15
- Oregon State College. Agricultural Experiment Station7
- Oregon State University. Extension Service6
- Mumford, D. Curtis (Dwight Curtis), 1900 4
- Hyer, Edgar A.3
- Nelson, Gene3
- Nelson, A. Gene2
- Eisgruber, Ludwig M.1
- Matzat, James H.1
- Mosher, Wayne1
- Oregon State University. Agricultural Experiment Station1
- Pacific Northwest Cooperative Extension1
- Willett, Gayle S.1