@misc{indiciae1e878133461b,
  title = {Coal resource occurrence and coal development potential maps of the Divide School quadrangle, Custer and Powder River Counties, Montana},
  author = {Colorado School of Mines},
  year = {1979},
  doi = {10.3133/ofr798},
  url = {https://pubs.usgs.gov/publication/ofr798},
  note = {Source identifier: ofr798}
}