@misc{indiciae35baa15441c0,
  title = {Preliminary photointerpretation map of landslide and other surficial deposits of the Mount Diablo area, Contra Costa and Alameda Counties, California},
  author = {Tor H. Nilsen},
  year = {1971},
  doi = {10.3133/mf310},
  url = {https://pubs.usgs.gov/publication/mf310},
  note = {Source identifier: mf310}
}