Contributor
- Eggers, John1
- Forest Products Laboratory (U.S.)1
- Fredeen, George Norman1
- Hagan, Charles B.1
- Harris, Irwin1
- Oregon State College. Federal Cooperative Extension Service1
- Pacific Northwest Cooperative Extension1
- Powell, Louis W.1
- Radir, Ruth1
- University Of Idaho. Extension Service1
- Warren, Dan1
- Washington State University. Extension Service1
- West, William I.2
- Yoder, Ray A.1