@misc{indiciae5e10635632ed,
  title = {Geology, structure, and coal beds of the Fort Union Formation in the eastern part of the Fort Peck Indian Reservation, Daniels, Roosevelt, and Sheridan counties, Montana},
  author = {John K. Hardie and Harold H. Arndt},
  year = {1988},
  doi = {10.3133/coal122a},
  url = {https://pubs.usgs.gov/publication/coal122A},
  note = {Source identifier: coal122A}
}