@misc{indiciae99ef85baf392,
  title = {Aeromagnetic map of the Westford quadrangle and part of the Spring Hill quadrangle, Tolland and Windham Counties, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp650},
  url = {https://pubs.usgs.gov/publication/gp650},
  note = {Source identifier: gp650}
}