Creator
- Oregon State University. Extension Service3
- Oregon State University. Agricultural Experiment Station2
- Oregon State University. Cooperative Extension Service2
- Youngberg, Harold Wayne, 1929 2
- Coppedge, Robert O.1
- Greene, Charles H. (Charles Henry), 1932 1
- Hepworth, Homer M.1
- Lee, W. O.1
- Middlemiss, Willis E.1
- Middlemiss, Willis Earl1
- Oregon State College. Federal Cooperative Extension Service1
- Oregon State University. Department Of Farm Crops1
- United States. Department Of Agriculture1
- United States. Department Of Agriculture. Economic Research Service1