@misc{indiciaef6c59a4402c1,
  title = {Aeromagnetic map of parts of the Willcox and Luzena quadrangles, Cochise County, Arizona},
  author = {W.J. Dempsey and M. E. Hill},
  year = {1963},
  doi = {10.3133/gp418},
  url = {https://pubs.usgs.gov/publication/gp418},
  note = {Source identifier: gp418}
}