@misc{indiciae21229eb6fae0,
  title = {Preliminary maps showing Quaternary geology of the Tracy and Midway 7.5-minute quadrangles, California},
  author = {Janet M. Sowers and Jay S. Noller and W. R. Lettis},
  year = {1993},
  doi = {10.3133/ofr93225},
  url = {https://pubs.usgs.gov/publication/ofr93225},
  note = {Source identifier: ofr93225}
}