@misc{indiciae4e5160a9a2be,
  title = {Preliminary report of coal exploration drilling in the Broadus area, Powder River County, Montana, during 1978},
  author = {John K. Hardie},
  year = {1979},
  doi = {10.3133/ofr79965},
  url = {https://pubs.usgs.gov/publication/ofr79965},
  note = {Source identifier: ofr79965}
}