@misc{indiciae86027c5ad2d4,
  title = {Oxidized zinc districts in California and Nevada},
  author = {Allen Van Heyl and C. N. Bozion},
  year = {1964},
  doi = {10.3133/mr39},
  url = {https://pubs.usgs.gov/publication/mr39},
  note = {Source identifier: mr39}
}