@misc{indiciaeb1c582fc5766,
  title = {Preliminary photointerpretation map of landslide and other surficial deposits of parts of the Pittsburg and Rio Vista 15-minute quadrangles, Contra Costa and Solano Counties, California},
  author = {J.D. Sims and T. H. Nilsen},
  year = {1972},
  doi = {10.3133/mf322},
  url = {https://pubs.usgs.gov/publication/mf322},
  note = {Source identifier: mf322}
}