@misc{indiciaedbd3b9b141d0,
  title = {Geologic map of the Del Norte area, eastern San Juan Mountains, Colorado},
  author = {P. W. Lipman},
  year = {1976},
  doi = {10.3133/i952},
  url = {https://pubs.usgs.gov/publication/i952},
  note = {Source identifier: i952}
}