, Canadian Forestry Service Pacific Forestry Centre 506 W. Burnside Rd. Victoria, BC V8A 1M5, Canada

• Journal of the Entomological Society of British Columbia Vol. 85 (1988): Journal of the Entomological Society of British Columbia - Articles
  Comparison of Binocular and Cut-branch Methods for Estimating Budworm Defoliation of Douglas-fir
  Abstract  PDF