Proceedings of the 53rd Annual Western Orchard Pest and Disease Management Conference, held January 10-12, 1979 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 55th Annual Western Orchard Pest and Disease Management Conference, held January 20-22, 1981 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 54th Annual Western Orchard Pest and Disease Management Conference, held January 16-18, 1980 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 65th Annual Western Orchard Pest and Disease Management Conference, held January 9-11, 1991 at the Imperial Hotel in Portland, Oregon.