@misc{indiciae89879e06e778,
  title = {Aeromagnetic map of part of northern Washington},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1977},
  doi = {10.3133/ofr77254},
  url = {https://pubs.usgs.gov/publication/ofr77254},
  note = {Source identifier: ofr77254}
}