@misc{indiciae7f3aa61f3c3a,
  title = {Instrument specifications and geophysical records for airborne electromagnetic survey of parts of Iron, Baraga, and Dickson Counties, Michigan},
  author = {William D. Heran and Bruce D. Smith},
  year = {1980},
  doi = {10.3133/ofr80296},
  url = {https://pubs.usgs.gov/publication/ofr80296},
  note = {Source identifier: ofr80296}
}