@misc{indiciae244842137e1d,
  title = {Preliminary geology of the San Luis Peak quadrangle and adjacent areas San Juan volcanic field, southwestern Colorado},
  author = {P. W. Lipman and D.A. Sawyer},
  year = {1988},
  doi = {10.3133/ofr88359},
  url = {https://pubs.usgs.gov/publication/ofr88359},
  note = {Source identifier: ofr88359}
}