@misc{indiciae0327412785a9,
  title = {Coal resource occurrence and coal development potential maps of the Quietus Quadrangle, Big Horn and Powder River counties, Montana},
  author = {William Craven Culbertson and L. N. Robinson},
  year = {1978},
  doi = {10.3133/ofr78654},
  url = {https://pubs.usgs.gov/publication/ofr78654},
  note = {Source identifier: ofr78654}
}