North American bees of the genus Heteranthidium. American Museum novitates ; no. 218

Schwarz, Herbert Ferlando, 1883-1960.2005-10-062005-10-061926http://hdl.handle.net/2246/319016 p. ; 23 cm.1829823 bytesapplication/pdfen-USQL1 .A436 no.218, 1926Heteranthidium -- Classification.Bees -- United States -- Classification.Insects -- United States -- Classification.North American bees of the genus Heteranthidium. American Museum novitates ; no. 218text