@misc{indiciae0b30f80d358c,
  title = {Geologic map of the Tar Spring Ridge Quadrangle, San Luis Obispo County, California},
  author = {Hugh McLean},
  year = {1995},
  doi = {10.3133/mf2298},
  url = {https://pubs.usgs.gov/publication/mf2298},
  note = {Source identifier: mf2298}
}