@misc{indiciae1ae4c42f3c11,
  title = {Coal resource occurrence and coal development potential maps of the John Hen Creek Quadrangle, Rosebud County, Montana},
  author = {Colorado School of Mines Research Institute},
  year = {1978},
  doi = {10.3133/ofr78643},
  url = {https://pubs.usgs.gov/publication/ofr78643},
  note = {Source identifier: ofr78643}
}