@misc{indiciae118c4664bce9,
  title = {Aeromagnetic map of parts of the Ironwood and Wakefield quadrangles, Gogebic County, Michigan and Iron and Vilas Counties, Wisconsin},
  author = {P. W. Philbin and J. L. Vargo},
  year = {1966},
  doi = {10.3133/gp578},
  url = {https://pubs.usgs.gov/publication/gp578},
  note = {Source identifier: gp578}
}