@misc{indiciae9516915c9a23,
  title = {Geologic map of the northernmost Park Range and southernmost Sierra Madre, Jackson and Routt counties, Colorado},
  author = {George L. Snyder},
  year = {1977},
  doi = {10.3133/ofr77188},
  url = {https://pubs.usgs.gov/publication/ofr77188},
  note = {Source identifier: ofr77188}
}