TY - RPRT TI - Geologic map of the Mule Ear Diatreme, San Juan County, Utah AU - D.E. Stuart-Alexander AU - E.M. Shoemaker AU - H. J. Moore PY - 1972 DO - 10.3133/i674 UR - https://pubs.usgs.gov/publication/i674 ID - i674 ER -