@misc{indiciae9179d4cf48c3,
  title = {Geochemical maps of the North Fork of the American River Wilderness Study Area, California},
  author = {D. S. Harwood},
  year = {1982},
  doi = {10.3133/mf1177b},
  url = {https://pubs.usgs.gov/publication/mf1177B},
  note = {Source identifier: mf1177B}
}