@misc{indiciae3e04e33571ca,
  title = {Surficial geologic map of the Amboy 30' x 60' quadrangle, San Bernardino County, California},
  author = {David R. Bedford and David M. Miller and Geoffrey A. Phelps},
  year = {2010},
  doi = {10.3133/sim1309},
  url = {https://pubs.usgs.gov/publication/sim1309},
  note = {Source identifier: sim1309}
}