@misc{indiciae310de62cc9cf,
  title = {Map showing silver concentrations for stream sediments and soils throughout the Humboldt River basin and surrounding areas, northern Nevada},
  author = {Douglas B. Yager and Helen W. Folger},
  year = {2003},
  doi = {10.3133/mf2407i},
  url = {https://pubs.usgs.gov/publication/mf2407I},
  note = {Source identifier: mf2407I}
}