@misc{indiciaec0f55eff04c0,
  title = {Aeromagnetic map of Findlay, Ohio, and vicinity},
  author = {R. W. Bromery and W. E. McCaslin},
  year = {1965},
  doi = {10.3133/gp500},
  url = {https://pubs.usgs.gov/publication/gp500},
  note = {Source identifier: gp500}
}