@misc{indiciae1722c36cc6cd,
  title = {Geologic map of the Ruedi quadrangle, Pitkin and Eagle Counties, Colorado},
  author = {Val L. Freeman},
  year = {1972},
  doi = {10.3133/gq1004},
  url = {https://pubs.usgs.gov/publication/gq1004},
  note = {Source identifier: gq1004}
}