@misc{indiciaef347ded0aaab,
  title = {Aeromagnetic map of part of the North Cascades National Park, Washington},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1984},
  doi = {10.3133/ofr84511},
  url = {https://pubs.usgs.gov/publication/ofr84511},
  note = {Source identifier: ofr84511}
}