@misc{indiciae0a483e1ba158,
  title = {The northward extension of the Sheridan coal field, Big Horn and Rosebud Counties, Montana},
  author = {A. A. Baker},
  year = {1929},
  doi = {10.3133/b806b},
  url = {https://pubs.usgs.gov/publication/b806B},
  note = {Source identifier: b806B}
}