@misc{indiciae269591a37d05,
  title = {Aeromagnetic map of the Bristol quadrangle and part of the Collinsville quadrangle, Hartford, New Haven, and Litchfield Counties, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1973},
  doi = {10.3133/gp845},
  url = {https://pubs.usgs.gov/publication/gp845},
  note = {Source identifier: gp845}
}