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 57th Annual Western Orchard Pest and Disease Management Conference, held January 13-15, 1983 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 63rd Annual Western Orchard Pest and Disease Management Conference, held January 11-13, 1989 at the Imperial Hotel in Portland, Oregon.