TY - RPRT TI - Preliminary structure contour map on the base of the Cretaceous Dakota sandstone in the San Juan Basin and vicinity, New Mexico, Arizona, Colorado, and Utah AU - R.E. Thaden AU - R. S. Zech PY - 1984 DO - 10.3133/mf1673 UR - https://pubs.usgs.gov/publication/mf1673 ID - mf1673 ER -