@misc{indiciaeb566eb9e8bae,
  title = {Volcanism in the western San Juan Mountains, Colorado},
  author = {R. G. Luedke and W. S. Burbank},
  year = {1966},
  doi = {10.1007/bf02597162},
  url = {https://pubs.usgs.gov/publication/70221252},
  note = {Source identifier: 70221252}
}