TY - RPRT TI - Hydrogeology of the Gallup Sandstone in the San Juan structural basin, New Mexico, Colorado, Arizona, and Utah AU - John Michael Kernodle AU - G. W. Levings AU - S. D. Craigg AU - W. L. Dam PY - 1989 DO - 10.3133/ha720h UR - https://pubs.usgs.gov/publication/ha720H ID - ha720H ER -