@misc{indiciae47d7b89f25f4,
  title = {Geology of the Big Snowy Mountains, Montana},
  author = {Frank Reeves},
  year = {1931},
  doi = {10.3133/pp165d},
  url = {https://pubs.usgs.gov/publication/pp165D},
  note = {Source identifier: pp165D}
}