@misc{indiciae38ae2ad6d009,
  title = {Map showing copper concentrations from 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/mf2407e},
  url = {https://pubs.usgs.gov/publication/mf2407E},
  note = {Source identifier: mf2407E}
}