Creator
- Oregon State University. Extension Service3
- Ballerstedt, Peter John, 1956 1
- Elwood, Norman E.1
- Hannaway, D. B.1
- Pacific Northwest Cooperative Extension1
- United States. Department Of Agriculture1
- University Of Idaho. Cooperative Extension Service1
- Washington State University. Cooperative Extension1
- Weber, Bruce A.1
- Wilson, A. L.1