@misc{indiciaee61005874c71,
  title = {Aeromagnetic map of the Mt. St. Helens area, Washington},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1981},
  doi = {10.3133/ofr81932},
  url = {https://pubs.usgs.gov/publication/ofr81932},
  note = {Source identifier: ofr81932}
}