@misc{indiciaeec0d3d2d4d74,
  title = {Coal resource occurrence and coal development potential maps of the southern part of the Clubfoot Creek Quadrangle, Rosebud County, Montana},
  author = {W. J. Mapel and B. K. Martin},
  year = {1978},
  doi = {10.3133/ofr7841},
  url = {https://pubs.usgs.gov/publication/ofr7841},
  note = {Source identifier: ofr7841}
}