@misc{indiciaea79f0f8e18db,
  title = {Geologic map of Agua Caliente Springs quadrangle, San Diego County, California},
  author = {Victoria R. Todd},
  year = {1977},
  doi = {10.3133/ofr77742},
  url = {https://pubs.usgs.gov/publication/ofr77742},
  note = {Source identifier: ofr77742}
}