@misc{indiciae00370bc4ba24,
  title = {Aeromagnetic map of the Mount Tom quadrangle and part of the Woronoco quadrangle, Hampden and Hampshire Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1968},
  doi = {10.3133/gp622},
  url = {https://pubs.usgs.gov/publication/gp622},
  note = {Source identifier: gp622}
}