@misc{indiciae555ee1cac21e,
  title = {Isotopic geochronology of the Leadville 1° x 2° quadrangle, west-central Colorado; summary and discussion},
  author = {Alan R. Wallace},
  year = {1995},
  doi = {10.3133/b2104},
  url = {https://pubs.usgs.gov/publication/b2104},
  note = {Source identifier: b2104}
}