1. Geologic map of the Benson quadrangle, Cochise and Pima Counties, Arizona [cartographic material]
1967. 2012-10-03T12:45:56Z. 2013-03-18T22:21:20Z. Creasey, S. C. (Saville Cyrus), 1917-. The Survey. English. Public. Arizona, Cochise County, and Pima County.
