Sugden, B. A., Forest Biology Laboratory Forest Biology Division Science Service Canada Department of Agriculture Vernon, B.C., Canada
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Journal of the Entomological Society of British Columbia Vol. 54 (1957): Proceedings of the Entomological Society of British Columbia - Articles
A brief history of outbreaks of the Douglas-fir tussock moth, Hemerocampa pseudotsugata McD., in British Columbia
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