@misc{indiciaee1e514a7a901,
  title = {Preliminary geologic map of the Joe Davis Hill quadrangle, Colorado},
  author = {F.W. Cater},
  year = {1955},
  doi = {10.3133/mf27},
  url = {https://pubs.usgs.gov/publication/mf27},
  note = {Source identifier: mf27}
}