@misc{indiciae444565fee363,
  title = {Geologic map of the Holy Cross Quadrangle, Eagle, Lake, Pitkin, and Summit counties, Colorado},
  author = {Ogden Tweto},
  year = {1971},
  doi = {10.3133/ofr71286},
  url = {https://pubs.usgs.gov/publication/ofr71286},
  note = {Source identifier: ofr71286}
}