@misc{indiciae0f1a207632e2,
  title = {Photogeologic map of the Circle Cliffs-6 quadrangle, Garfield County, Utah},
  author = {R.J. Hackman},
  year = {1955},
  doi = {10.3133/i22},
  url = {https://pubs.usgs.gov/publication/i22},
  note = {Source identifier: i22}
}