Proceedings of the 62nd Annual Western Orchard Pest and Disease Management Conference, held January 13-15, 1988 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 66th Annual Western Orchard Pest and Disease Management Conference, held January 8-10, 1992 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 69th Annual Western Orchard Pest and Disease Management Conference, held January 11-13, 1995 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 68th Annual Western Orchard Pest and Disease Management Conference, held January 12-14, 1994 at the Imperial Hotel in Portland, Oregon.