Cockerell, Theodore D. A. (Theodore Dru Alison), 1866-1948.Lutz, Frank Eugene, 1879-1943.2005-10-062005-10-061933http://hdl.handle.net/2246/20343 p. ; 24 cm.Includes bibliographical references.267106 bytesapplication/pdfen-USQL1 .A436 no.595, 1933Bees -- Rocky MountainsInsects -- Rocky MountainsRocky Mountain bees. 4 [i.e. 5]. American Museum novitates ; no. 595Rocky Mountain bees.text