@misc{indiciae20ebf2e315fc,
  title = {Aeromagnetic map of Tennessee and Kentucky: In color},
  author = {Isidore Zietz and K. R. Bond},
  year = {1984},
  doi = {10.3133/gp959},
  url = {https://pubs.usgs.gov/publication/gp959},
  note = {Source identifier: gp959}
}