@misc{indiciaedb8da605f025,
  title = {Silver depletion indicated by microanalysis of gold from placer occurrences, western United States},
  author = {George A. Desborough},
  year = {1970},
  doi = {10.2113/gsecongeo.65.3.304},
  url = {https://pubs.usgs.gov/publication/70226299},
  note = {Source identifier: 70226299}
}