@misc{indiciae02831d12129f,
  title = {Aeromagnetic map of the Cochise quadrangle, Cochise County, Arizona},
  author = {W.J. Dempsey and W.D. Fackler},
  year = {1963},
  doi = {10.3133/gp413},
  url = {https://pubs.usgs.gov/publication/gp413},
  note = {Source identifier: gp413}
}