@misc{indiciaebacdf2cfbf84,
  title = {Aeromagnetic map of the Mammoth quadrangle, Pinal and Pima Counties, Arizona},
  author = {W.J. Dempsey and M. E. Hill},
  year = {1963},
  doi = {10.3133/gp419},
  url = {https://pubs.usgs.gov/publication/gp419},
  note = {Source identifier: gp419}
}