@misc{indiciaed2b361d2a427,
  title = {Results of exploratory drilling for lignite in 1978, Fort Peck Indian Reservation, Roosevelt County, Montana},
  author = {John K. Hardie and Harold H. Arndt},
  year = {1981},
  doi = {10.3133/ofr81786},
  url = {https://pubs.usgs.gov/publication/ofr81786},
  note = {Source identifier: ofr81786}
}