@misc{indiciae9da64c6ab507,
  title = {Geologic map of the San Luis Obispo 15-minute Quadrangle, California},
  author = {T. W. Dibblee},
  year = {1974},
  doi = {10.3133/ofr74223},
  url = {https://pubs.usgs.gov/publication/ofr74223},
  note = {Source identifier: ofr74223}
}