@misc{indiciae2b3e937f0bd2,
  title = {Geologic map of the Creede quadrangle, Mineral and Saguache Counties, Colorado},
  author = {Thomas August Steven and James Clifford Ratte},
  year = {1973},
  doi = {10.3133/gq1053},
  url = {https://pubs.usgs.gov/publication/gq1053},
  note = {Source identifier: gq1053}
}