@misc{indiciaecc6651395383,
  title = {Aeromagnetic map of the Colebrook-Umbagog Lake area, New Hampshire and Vermont},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp655},
  url = {https://pubs.usgs.gov/publication/gp655},
  note = {Source identifier: gp655}
}