@misc{indiciae0fb05ddbd5c9,
  title = {Geology and ground waters of the western part of San Diego County, California},
  author = {Arthur Jackson Ellis and C.H. Lee},
  year = {1919},
  doi = {10.3133/wsp446},
  url = {https://pubs.usgs.gov/publication/wsp446},
  note = {Source identifier: wsp446}
}