TY - RPRT TI - Preliminary geologic map of the Hogback South Quadrangle, San Juan County, New Mexico AU - R. B. O'Sullivan AU - G. R. Scott AU - J.S. Heller PY - 1979 DO - 10.3133/mf1093 UR - https://pubs.usgs.gov/publication/mf1093 ID - mf1093 ER -