@misc{indiciaefd71f315ed06,
  title = {Geologic map of the Joshua Tree quadrangle, San Bernardino and Riverside Counties, California},
  author = {T. W. Dibblee},
  year = {1967},
  doi = {10.3133/i516},
  url = {https://pubs.usgs.gov/publication/i516},
  note = {Source identifier: i516}
}