@misc{indiciae4d7bfc798e8e,
  title = {Residual total intensity magnetic map of Ohio},
  author = {T.G. Hildenbrand and R.P. Kucks},
  year = {1984},
  doi = {10.3133/gp961},
  url = {https://pubs.usgs.gov/publication/gp961},
  note = {Source identifier: gp961}
}