@misc{indiciaef398ce94bc2d,
  title = {Maps showing ground-water conditions in the western part of the Salt River Valley area, Maricopa County, Arizona, 1977},
  author = {P. P. Ross},
  year = {1978},
  doi = {10.3133/wri7840},
  url = {https://pubs.usgs.gov/publication/wri7840},
  note = {Source identifier: wri7840}
}