Proceedings of the 63rd Annual Western Orchard Pest and Disease Management Conference, held January 11-13, 1989 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 74th Annual Western Orchard Pest and Disease Management Conference, held January 5-7, 2000 at the Imperial Portland in Portland, Oregon.
Proceedings of the 70th Annual Western Orchard Pest and Disease Management Conference, held January 10-12, 1996 at the Imperial Hotel in Portland, Oregon.