@misc{indiciae2d68df4aa75e,
  title = {Collected logs of borings in San Francisco area, a continued compilation of boring data},
  author = {Julius Schlocker},
  year = {1950},
  doi = {10.3133/ofr5049},
  url = {https://pubs.usgs.gov/publication/ofr5049},
  note = {Source identifier: ofr5049}
}