@misc{indiciae9cf33655912c,
  title = {Aeromagnetic map of the Ware quadrangle, Worcester and Hampshire Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp665},
  url = {https://pubs.usgs.gov/publication/gp665},
  note = {Source identifier: gp665}
}