Books of Apidae
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Systematics of Bees of the Genus Eufriesea (Hymenoptera, Apidae)
By Lynn Siri KimseyParis : Dumenil . Bodkin , G. E. 1918 Notes on some British Guiana Hymenoptera , exclusive of the Formicidae . Trans . Ent . Soc . Lond . , pp . 279-231 . Bohart , R. M. , and L. A. Stange 1965 A revision of the genus Zethus Fabricius ...