@misc{indiciae84d69850f23d,
  title = {Geologic map of the Brockton quadrangle, Roosevelt and Richland Counties, Montana},
  author = {R. B. Colton},
  year = {1963},
  doi = {10.3133/i362},
  url = {https://pubs.usgs.gov/publication/i362},
  note = {Source identifier: i362}
}