@misc{indiciae8d9e624cf9b5,
  title = {Reconnaissance landslide map of parts of Marin and Sonoma counties, California},
  author = {Carl M. Wentworth and Virgil A. Frizzell},
  year = {1975},
  doi = {10.3133/ofr75281},
  url = {https://pubs.usgs.gov/publication/ofr75281},
  note = {Source identifier: ofr75281}
}