@misc{indiciae8bc00499df0c,
  title = {Geologic map of the Twomile Creek Quadrangle, Richland and Roosevelt counties, Montana},
  author = {R. B. Colton},
  year = {1982},
  doi = {10.3133/mf1413},
  url = {https://pubs.usgs.gov/publication/mf1413},
  note = {Source identifier: mf1413}
}