@misc{indiciae5911ac4e5ffc,
  title = {Aeromagnetic map of the Roxbury Quadrangle, Litchfield and New Haven Counties, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1971},
  doi = {10.3133/gp819},
  url = {https://pubs.usgs.gov/publication/gp819},
  note = {Source identifier: gp819}
}