@misc{indiciae7441b56cc2cf,
  title = {Geologic map of the Lopez Mountain quadrangle, San Luis Obispo County, California},
  author = {Hugh McLean},
  year = {1994},
  doi = {10.3133/gq1723},
  url = {https://pubs.usgs.gov/publication/gq1723},
  note = {Source identifier: gq1723}
}