@misc{indiciae86f8690b5a26,
  title = {Geologic maps of the Ishi, Mill Creek, Polk Springs, and Butt Mountain Further Planning Areas, Tehama and Plumas counties, California},
  author = {J.A. Peterson and Robin Bradley and K. A. Johnson and P.A. Lydon},
  year = {1982},
  doi = {10.3133/mf1340a},
  url = {https://pubs.usgs.gov/publication/mf1340A},
  note = {Source identifier: mf1340A}
}