@misc{indiciaea19b28eccd21,
  title = {Photogeologic map of the Bluff-5 quadrangle, San Juan County, Utah},
  author = {P. P. Orkild},
  year = {1955},
  doi = {10.3133/i60},
  url = {https://pubs.usgs.gov/publication/i60},
  note = {Source identifier: i60}
}