@misc{indiciae0541b31e2182,
  title = {Geologic map of the Bozeman Pass quadrangle, Montana},
  author = {A. E. Roberts},
  year = {1964},
  doi = {10.3133/i399},
  url = {https://pubs.usgs.gov/publication/i399},
  note = {Source identifier: i399}
}