@misc{indiciaead2fb31a7f10,
  title = {Aeromagnetic map of the Columbus-Dayton area, Ohio and Indiana},
  author = {P. W. Philbin and C. L. Long and F.C. Moore},
  year = {1965},
  doi = {10.3133/gp491},
  url = {https://pubs.usgs.gov/publication/gp491},
  note = {Source identifier: gp491}
}