@misc{indiciae00c039f21e23,
  title = {Geologic map of the Cholame Quadrangle, San Luis Obispo County, California},
  author = {J.D. Sims and J. C. Hamilton},
  year = {1991},
  doi = {10.3133/mf2170},
  url = {https://pubs.usgs.gov/publication/mf2170},
  note = {Source identifier: mf2170}
}