@misc{indiciaea337d2c3c4fa,
  title = {Geologic map and coal sections of the Pearl School quadrangle and the easternmost part of the Bar V Ranch quadrangle, Big Horn County, Montana},
  author = {Gary L. Galyardt and F. N. Murray},
  year = {1981},
  doi = {10.3133/ofr81870},
  url = {https://pubs.usgs.gov/publication/ofr81870},
  note = {Source identifier: ofr81870}
}