@misc{indiciae43e89e98e10c,
  title = {Aeromagnetic map of the Horseshoe Basin Quadrangle, Okanogan County, Washington},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1976},
  doi = {10.3133/ofr76359},
  url = {https://pubs.usgs.gov/publication/ofr76359},
  note = {Source identifier: ofr76359}
}