@misc{indiciaef772e280c617,
  title = {Photogeologic map, Mt. Peale-9 Quadrangle, San Juan county, Utah, and Montrose and San Miguel counties, Colorado},
  author = {R.J. Hackman},
  year = {1955},
  doi = {10.3133/tem450a},
  url = {https://pubs.usgs.gov/publication/tem450A},
  note = {Source identifier: tem450A}
}