@misc{indiciae18b0ef311526,
  title = {Geologic and geochemical maps of the Rubicon Roadless Area, Placer and Eldorado counties, California},
  author = {D. S. Harwood},
  year = {1983},
  doi = {10.3133/mf1501a},
  url = {https://pubs.usgs.gov/publication/mf1501A},
  note = {Source identifier: mf1501A}
}