TY - RPRT TI - Geologic map of the Glen Canyon Dam 30’ x 60’ quadrangle, Coconino County, northern Arizona AU - George H. Billingsley AU - Susan S. Priest PY - 2013 DO - 10.3133/sim3268 UR - https://pubs.usgs.gov/publication/sim3268 ID - sim3268 ER -