@misc{indiciae6dbb1e6a6876,
  title = {Preliminary surficial geologic map database of the Amboy 30 x 60 minute quadrangle, California},
  author = {David R. Bedford and David M. Miller and Geoffrey A. Phelps},
  year = {2006},
  doi = {10.3133/ofr20061165},
  url = {https://pubs.usgs.gov/publication/ofr20061165},
  note = {Source identifier: ofr20061165}
}