@misc{indiciae0abdbddc58cc,
  title = {Map showing structure contours on top of the Pictured Cliffs Sandstone and depths to the base of the Fruitland Formation, Chaco Canyon 30' x 60' Quadrangle, San Juan, Rio Arriba, and Sandoval counties, New Mexico},
  author = {Nancy W. Sweatt and James W. Mytton},
  year = {1983},
  doi = {10.3133/coal92b},
  url = {https://pubs.usgs.gov/publication/coal92B},
  note = {Source identifier: coal92B}
}