Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension; Hannaway, D. B.; Ballerstedt, Peter J. ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1988-04)
