@misc{indiciae8a957629386e,
  title = {Map of debris-flow probability, San Mateo County, California},
  author = {R. K. Mark},
  year = {1992},
  doi = {10.3133/i1257m},
  url = {https://pubs.usgs.gov/publication/i1257M},
  note = {Source identifier: i1257M}
}