@misc{indiciae4e9a8d970cce,
  title = {Preliminary geologic map of eastern Sonoma County and western Napa County, California},
  author = {K. F. Fox and J.D. Sims and J. A. Bartow and E. J. Helley},
  year = {1973},
  doi = {10.3133/mf483},
  url = {https://pubs.usgs.gov/publication/mf483},
  note = {Source identifier: mf483}
}