Alfaro, R. I., Canadian Forestry Service Pacific Forestry Centre 506 West Burnside Road Victoria, BC V8Z 1M5, Canada
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Journal of the Entomological Society of British Columbia Vol. 85 (1988): Journal of the Entomological Society of British Columbia - Articles
Predicting Douglas-fir Defoliation from the Percentage of Buds Infested by the Western Spruce Budworm
Abstract PDF