@misc{indiciae6d7d5784342a,
  title = {Geologic map of the Handies Peak quadrangle, San Juan, Hinsdale and Ouray Counties, Colorado},
  author = {Robert G. Luedke and Wilbur S. Burbank},
  year = {1987},
  doi = {10.3133/gq1595},
  url = {https://pubs.usgs.gov/publication/gq1595},
  note = {Source identifier: gq1595}
}