@misc{indiciae5b46ea2aff65,
  title = {Aeromagnetic survey in Wisconsin 1997-98; digital data files},
  author = {D. L. Daniels and S. W. Nicholson and W.F. Cannon},
  year = {1999},
  doi = {10.3133/ofr9928},
  url = {https://pubs.usgs.gov/publication/ofr9928},
  note = {Source identifier: ofr9928}
}