Roitberg, Bernard D., Centre for Pest Management Department of Biological Sciences Simon Fraser University Burnaby, BC V5A 1S6, 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
Comparative Flight Dynamics of Knapweed Gall Flies Urophora quadrifasciata and U. affinis (Diptera: Tephritidae)
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