@misc{indiciae51f9f6211ed1,
  title = {Photogeologic map, Navajo Mountain-14 quadrangle, San Juan County, Utah and Coconino County, Arizona},
  author = {R.J. Hackman},
  year = {1956},
  doi = {10.3133/tem936},
  url = {https://pubs.usgs.gov/publication/tem936},
  note = {Source identifier: tem936}
}