@misc{indiciae487884b6dab5,
  title = {Prehistoric near-surface subsidence cracks in western Fresno County, California},
  author = {W.B. Bull},
  year = {1972},
  doi = {10.3133/pp437c},
  url = {https://pubs.usgs.gov/publication/pp437C},
  note = {Source identifier: pp437C}
}