Sugden, B. A., Forest Entomology Laboratory Department of Forestry of Canada Vernon, B.C., Canada
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Journal of the Entomological Society of British Columbia Vol. 63 (1966): Journal of the Entomological Society of British Columbia - Articles
Annotated list of forest insects of British Columbia Part XIII, Brephinae, Geometrinae, Sterrhinae and Larentiinae (Geometridae)
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