@misc{indiciae9e92a0d6d389,
  title = {Outline of the Geology of the Comstock Lode District, Nevada},
  author = {F. C. Calkins},
  year = {1945},
  doi = {10.3133/ofr4529},
  url = {https://pubs.usgs.gov/publication/ofr4529},
  note = {Source identifier: ofr4529}
}