@misc{indiciaed7c5743b4a3b,
  title = {Bibliographies and location maps of publications on aeromagnetic and aeroradiometric surveys for the states east of the Mississippi River and north of the Ohio and Potomac Rivers},
  author = {Patricia L. Hill},
  year = {1991},
  doi = {10.3133/ofr91370c},
  url = {https://pubs.usgs.gov/publication/ofr91370C},
  note = {Source identifier: ofr91370C}
}