@misc{indiciae57b8b5f9bd7e,
  title = {Geologic map of the Julian 7.5' quadrangle, San Diego County, California},
  author = {Victoria R. Todd},
  year = {2015},
  doi = {10.3133/ofr9416},
  url = {https://pubs.usgs.gov/publication/ofr9416},
  note = {Source identifier: ofr9416}
}