@misc{indiciae2af00cfdcdf6,
  title = {Aeromagnetic survey of the Sparta 1:100,000 quadrangle, Wisconsin},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1999},
  doi = {10.3133/ofr99526f},
  url = {https://pubs.usgs.gov/publication/ofr99526F},
  note = {Source identifier: ofr99526F}
}