@misc{indiciaed0d9a542f992,
  title = {Cross sections, Mammoth coal bed and Rehder split of Mammoth coal bed, Bull Mountain coal field, Montana},
  author = {C. W. Connor},
  year = {1981},
  doi = {10.3133/ofr81190},
  url = {https://pubs.usgs.gov/publication/ofr81190},
  note = {Source identifier: ofr81190}
}