@misc{indiciae0b4e8b0e4dc4,
  title = {Aeromagnetic map of the Orange quadrangle, Franklin and Worcester Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1971},
  doi = {10.3133/gp735},
  url = {https://pubs.usgs.gov/publication/gp735},
  note = {Source identifier: gp735}
}