@misc{indiciae560ae242f485,
  title = {Geologic map and section of the Bob Marshall Wilderness and Study Areas, Lewis and Clark, Teton, Pondera, Flathead, Missoula, and Powell counties, Montana},
  author = {Melville Rhodes Mudge and Robert L. Earhart},
  year = {1977},
  doi = {10.3133/ofr77350},
  url = {https://pubs.usgs.gov/publication/ofr77350},
  note = {Source identifier: ofr77350}
}