@misc{indiciae0a1600bfbee4,
  title = {Measured sections of the Barstow Formation, Mud Hills, San Bernardino County, California},
  author = {Richard A. Sheppard},
  year = {1967},
  doi = {10.3133/ofr67200},
  url = {https://pubs.usgs.gov/publication/ofr67200},
  note = {Source identifier: ofr67200}
}