@misc{indiciae0fb7b339e51b,
  title = {Index maps for large-scale vertical black and white aerial photographs along the Hayward and Calaveras faults, California},
  author = {Charles W. Hedel},
  year = {1979},
  doi = {10.3133/ofr79284},
  url = {https://pubs.usgs.gov/publication/ofr79284},
  note = {Source identifier: ofr79284}
}