@misc{indiciaedb32c58ad4b7,
  title = {Geology and ground-water resources of the Salt River Valley area, Maricopa and Pinal counties, Arizona},
  author = {Harris R. McDonald and Henry Newton Wolcott and John David Hem},
  year = {1947},
  doi = {10.3133/2239},
  url = {https://pubs.usgs.gov/publication/2239},
  note = {Source identifier: 2239}
}