@misc{indiciaee2c9c628250e,
  title = {Aeromagnetic survey of parts of the Appleton, Manitowoc, and adjacent 1:100,000 quadrangles, Wisconsin and Michigan},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1999},
  doi = {10.3133/ofr99526o},
  url = {https://pubs.usgs.gov/publication/ofr99526O},
  note = {Source identifier: ofr99526O}
}