@misc{indiciae6bb2064b6e2a,
  title = {Geologic map of Twitchell Dam and parts of Santa Maria and Tepusquet Canyon quadrangles, Santa Barbara County, California},
  author = {C.A. Hall},
  year = {1978},
  doi = {10.3133/mf933},
  url = {https://pubs.usgs.gov/publication/mf933},
  note = {Source identifier: mf933}
}