@misc{indiciae7ea53c2d0057,
  title = {Photogeologic map of the Mount Peale-1 quadrangle, San Juan County, Utah, and Montrose County, Colorado},
  author = {R.J. Hackman},
  year = {1956},
  doi = {10.3133/i165},
  url = {https://pubs.usgs.gov/publication/i165},
  note = {Source identifier: i165}
}