A preliminary report on deterioration in the western hemlock-Douglas fir type on lower Vancouver Island following attack by the western hemlock looper (Lambdina F. lugubrosa) (Lepidoptera. Geometridae)
By: by R. E. Foster and D. R. Hurn
Published: 1949
Place of publication: Toronto
Language: eng
Number of pages: 204
Notes: Contribution no. 981, Division of Botany and Plant Pathology, Science Service, Department of Agriculture, Ottawa, Canada.

Reprinted from The Forestry Chronicle, v. 25, no. 3, September 1949.