@misc{indiciae45abed91ba41,
  title = {Geologic map of parts of Sego Canyon and Thompson quadrangles, Utah, showing coal zones and adjacent rocks},
  author = {James Louis Gualtieri},
  year = {1981},
  doi = {10.3133/ofr81553},
  url = {https://pubs.usgs.gov/publication/ofr81553},
  note = {Source identifier: ofr81553}
}