@misc{indiciae53e5d350bed3,
  title = {Preliminary geologic map of Long Valley Caldera, Mono County, California},
  author = {Roy A. Bailey and Robert P. Koeppen},
  year = {1977},
  doi = {10.3133/ofr77468},
  url = {https://pubs.usgs.gov/publication/ofr77468},
  note = {Source identifier: ofr77468}
}