@misc{indiciaed16f144243e1,
  title = {Geologic maps of upper Cenozoic deposits in central California},
  author = {J. L. Chin and J. R. Morrow and C.R. Ross},
  year = {1993},
  doi = {10.3133/i1943},
  url = {https://pubs.usgs.gov/publication/i1943},
  note = {Source identifier: i1943}
}