@misc{indiciae4022efd088d3,
  title = {Photogeologic map of the Mount Peale-8 quadrangle, San Juan County, Utah, and Montrose County, Colorado},
  author = {R.J. Hackman},
  year = {1956},
  doi = {10.3133/i174},
  url = {https://pubs.usgs.gov/publication/i174},
  note = {Source identifier: i174}
}