@misc{indiciae3bd9df1f794e,
  title = {Geologic map and coal sections of the Forks Ranch quadrangle, Big Horn County, Montana},
  author = {William C. Culbertson and Mark C. Klett},
  year = {1979},
  doi = {10.3133/mf1086},
  url = {https://pubs.usgs.gov/publication/mf1086},
  note = {Source identifier: mf1086}
}