@misc{indiciae51a31888a79f,
  title = {Geologic map of the Fifteenmile Valley 7.5' quadrangle, San Bernardino County, California},
  author = {F. K. Miller and J. C. Matti},
  year = {2001},
  doi = {10.3133/ofr01132},
  url = {https://pubs.usgs.gov/publication/ofr01132},
  note = {Source identifier: ofr01132}
}