@misc{indiciae554fe08e8acd,
  title = {Photogeologic map of the Clay Hills-8 quadrangle, San Juan County, Utah},
  author = {C. H. Marshall},
  year = {1955},
  doi = {10.3133/i58},
  url = {https://pubs.usgs.gov/publication/i58},
  note = {Source identifier: i58}
}