@misc{indiciae7023c4fcb847,
  title = {Aeromagnetic map of the Casa Grande area, Maricopa and Pinal Counties, Arizona},
  author = {C. M. Mitchell and G. L. Zandle},
  year = {1965},
  doi = {10.3133/gp548},
  url = {https://pubs.usgs.gov/publication/gp548},
  note = {Source identifier: gp548}
}