TY - RPRT TI - Photogeologic maps of the Verdure 9, 10, 11, 12, 13, 14, 15, and 16 quadrangles, Utah and Colorado AU - Robert J. Hackman PY - 1952 DO - 10.3133/ofr5265 UR - https://pubs.usgs.gov/publication/ofr5265 ID - ofr5265 ER -