@misc{indiciae73b8787a92bd,
  title = {Coal resource occurrence and coal development potential maps of the Birney Day School quadrangle, Rosebud County, Montana},
  author = {Colorado School of Mines},
  year = {1979},
  doi = {10.3133/ofr7980},
  url = {https://pubs.usgs.gov/publication/ofr7980},
  note = {Source identifier: ofr7980}
}