@misc{indiciae1c247112379f,
  title = {Geology of the Tullock Creek coal field, Rosebud and Big Horn counties, Montana},
  author = {Gaillard Sherburne Rogers and Wallace Lee},
  year = {1923},
  doi = {10.3133/b749},
  url = {https://pubs.usgs.gov/publication/b749},
  note = {Source identifier: b749}
}