@misc{indiciae069bed204981,
  title = {Geologic map of the Maudlow quadrangle, southwestern Montana},
  author = {Betty Skipp and A.D. Peterson},
  year = {1965},
  doi = {10.3133/i452},
  url = {https://pubs.usgs.gov/publication/i452},
  note = {Source identifier: i452}
}