@misc{indiciae7e52bb92d254,
  title = {Geologic map of Cuyamaca Peak 7 1/2' quadrangle, San Diego County, California},
  author = {Victoria R. Todd},
  year = {1977},
  doi = {10.3133/ofr77405},
  url = {https://pubs.usgs.gov/publication/ofr77405},
  note = {Source identifier: ofr77405}
}