@misc{indiciae8f72b7fac10d,
  title = {Digitized aeromagnetic datasets for the conterminous United States, Hawaii, and Puerto Rico},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1999},
  doi = {10.3133/ofr99557},
  url = {https://pubs.usgs.gov/publication/ofr99557},
  note = {Source identifier: ofr99557}
}