@misc{indiciae4233557b79fe,
  title = {Aeromagnetic map of the Chester quadrangle and parts of the Beckett and Blandford quadrangles, Berkshire, Hampden, and Hampshire Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1968},
  doi = {10.3133/gp625},
  url = {https://pubs.usgs.gov/publication/gp625},
  note = {Source identifier: gp625}
}