@misc{indiciae99cb4949a2f8,
  title = {Contributions to economic geology, 1920, Part I, Metals and nonmetals except fuels--The Divide silver district, Nevada},
  author = {Adolph Knopf},
  year = {1921},
  doi = {10.3133/b715k},
  url = {https://pubs.usgs.gov/publication/b715K},
  note = {Source identifier: b715K}
}