@misc{indiciaec30b986139f3,
  title = {Aeromagnetic map of southeastern Virginia},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1972},
  doi = {10.3133/ofr72389},
  url = {https://pubs.usgs.gov/publication/ofr72389},
  note = {Source identifier: ofr72389}
}