@misc{indiciaed35bf13af090,
  title = {The Forsyth coal field, Rosebud, Treasure, and Big Horn Counties, Montana},
  author = {C. E. Dobbin},
  year = {1930},
  doi = {10.3133/b812a},
  url = {https://pubs.usgs.gov/publication/b812A},
  note = {Source identifier: b812A}
}