@misc{indiciae8ea80a8e4d86,
  title = {Summary geochemical maps for samples of rock, stream sediment, and nonmagnetic heavy-mineral concentrate, Pyramid Roadless Area, El Dorado County, California},
  author = {M.A. Chaffee},
  year = {1986},
  doi = {10.3133/mf1616b},
  url = {https://pubs.usgs.gov/publication/mf1616B},
  note = {Source identifier: mf1616B}
}