@misc{indiciaeaac19e99e2c6,
  title = {Potential for aquifer compaction, land subsidence, and earth fissures in Avra Valley, Pima and Pinal Counties, Arizona},
  author = {S. R. Anderson},
  year = {1989},
  doi = {10.3133/ha718},
  url = {https://pubs.usgs.gov/publication/ha718},
  note = {Source identifier: ha718}
}