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Holarctic Tribes of the Ichneumon-flies of the Subfamily Ichneumoninae (Pimplinae)

Robert Asa CushmanSievert Allen Rohwer

出版	U.S. Government Printing Office, 1920
URL	http://books.google.com.hk/books?id=UHAuAAAAYAAJ&hl=&source=gbs_api