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Notes on the Distribution and Bibliography of North American Bees of the Families Apidae, Meliponidae, Bombidae, Euglossidae, and Anthophoridae

Frank Eugene LutzTheodore Dru Alison Cockerell

出版	order of the Trustees, American Museum of Natural History, 1920
URL	http://books.google.com.hk/books?id=dDEpAAAAYAAJ&hl=&source=gbs_api