@misc{indiciaef9a602cbb53a,
  title = {Map showing recent tectonic movement on the Concord Fault, Contra Costa and Solano Counties, California},
  author = {R. V. Sharp},
  year = {1973},
  doi = {10.3133/mf505},
  url = {https://pubs.usgs.gov/publication/mf505},
  note = {Source identifier: mf505}
}