Bees of the genus Colletes chiefly from Colorado. Bulletin of the AMNH ; v. 81, article 5.

Timberlake, P. H. (Philip Hunter), 1883-Lutz, Frank Eugene, 1879-1943.2005-10-052005-10-051943http://hdl.handle.net/2246/385p. 385-410 : ill. ; 25 cm.Includes bibliographical references.9043378 bytesapplication/pdfen-USQH1 .A4 vol.81, art.5, 1943Colletes -- Colorado.Colletes -- West (U.S.)Bees -- ColoradoBees -- West (U.S.)Insects -- ColoradoInsects -- West (U.S.)Bees of the genus Colletes chiefly from Colorado. Bulletin of the AMNH ; v. 81, article 5.Colletes from Coloradotext