@misc{indiciae752c4985810f,
  title = {Aquifer-system compaction, Tucson Basin and Avra Valley, Arizona},
  author = {R. T. Hanson},
  year = {1989},
  doi = {10.3133/wri884172},
  url = {https://pubs.usgs.gov/publication/wri884172},
  note = {Source identifier: wri884172}
}