@misc{indiciae9d7271a3e0a4,
  title = {Aeromagnetic map of the Winsted quadrangle and parts of the Torrington and Tolland Center quadrangles, Litchfield and Hartford Counties, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp643},
  url = {https://pubs.usgs.gov/publication/gp643},
  note = {Source identifier: gp643}
}