@misc{indiciae3fb334bc0061,
  title = {Aeromagnetic survey of Medina and Uvalde counties, Texas},
  author = {David V. Smith and Bruce D. Smith and Pat L. Hill},
  year = {2002},
  doi = {10.3133/ofr0249},
  url = {https://pubs.usgs.gov/publication/ofr0249},
  note = {Source identifier: ofr0249}
}