@misc{indiciaed2949d9dfcff,
  title = {Geologic map of the Maxey Ridge quadrangle, Montana},
  author = {A. E. Roberts},
  year = {1964},
  doi = {10.3133/i396},
  url = {https://pubs.usgs.gov/publication/i396},
  note = {Source identifier: i396}
}