@misc{indiciaed9eb98b704b3,
  title = {Coal geology of the Northeast Circle area, McCone and Dawson counties, Montana},
  author = {Herbert Wincentsen},
  year = {1979},
  doi = {10.3133/ofr791052},
  url = {https://pubs.usgs.gov/publication/ofr791052},
  note = {Source identifier: ofr791052}
}