@misc{indiciae172b57e993b0,
  title = {Geologic map of the Granite Spring Quadrangle, San Bernardino County, California},
  author = {H. G. Wilshire},
  year = {1992},
  doi = {10.3133/ofr92183},
  url = {https://pubs.usgs.gov/publication/ofr92183},
  note = {Source identifier: ofr92183}
}