@misc{indiciae7a8195e6ad59,
  title = {Aeromagnetic map of the Middle Haddam quadrangle, Middlesex County, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1973},
  doi = {10.3133/gp857},
  url = {https://pubs.usgs.gov/publication/gp857},
  note = {Source identifier: gp857}
}