@misc{indiciae9e77e8474bf4,
  title = {Geology and ore deposits of the Klondike Ridge area, Colorado},
  author = {John David Vogel},
  year = {1960},
  doi = {10.3133/ofr60145},
  url = {https://pubs.usgs.gov/publication/ofr60145},
  note = {Source identifier: ofr60145}
}