@misc{indiciaea3ef8f930a44,
  title = {A geologic reconnaissance of parts of Beaverhead and Madison Counties, Montana},
  author = {Montis Ruhl Klepper},
  year = {1950},
  doi = {10.3133/b969c},
  url = {https://pubs.usgs.gov/publication/b969C},
  note = {Source identifier: b969C}
}