@misc{indiciae61935bcef75f,
  title = {Bedrock geologic map of part of the northern disturbed belt, Lewis and Clark, Teton, Pondera, Glacier, Flathead, Cascade, and Powell counties, Montana},
  author = {M. R. Mudge and R.L. Earhart},
  year = {1983},
  doi = {10.3133/i1375},
  url = {https://pubs.usgs.gov/publication/i1375},
  note = {Source identifier: i1375}
}