@misc{indiciae82fd11f97aa3,
  title = {Aeromagnetic map of the Winsor Dam quadrangle, Hampshire, Worcester, and Franklin Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp664},
  url = {https://pubs.usgs.gov/publication/gp664},
  note = {Source identifier: gp664}
}