&rfr_id=info%3Asid%2Fwww.hebis.de%3AHeBIS&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.date=2000&rft.btitle=Classification of the bee tribe Augochlorini (Hymenoptera: Halictidae)&rft.au=Engel, Michael S.datl=1971-&rft.place=New York, NY&rft.pub=American Museum of Natural History&rft.tpages=89 S.&rft.genre=book