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Proceedings, Annual Meeting - North Central States Branch, American Association of Economic Entomologists

American Association of Economic Entomologists. North Central States BranchEntomological Society of America. North Central Branch

出版	Department of Entomology, Ohio Agricultural Research & Development Center, 1950
URL	http://books.google.com.hk/books?id=6pEtNlxUWdIC&hl=&source=gbs_api