@misc{indiciae1a83f6ee5567,
  title = {Coal resource occurrence and coal development potential maps of the Cook Creek Butte Quadrangle, Rosebud and Big Horn counties, Montana},
  author = {Colorado School of Mines Research Institute},
  year = {1979},
  doi = {10.3133/ofr79646},
  url = {https://pubs.usgs.gov/publication/ofr79646},
  note = {Source identifier: ofr79646}
}