@misc{indiciae3f16ab2b9a9c,
  title = {Aeromagnetic map of the Pittsfield West quadrangle, Berkshire County, Massachusetts and Columbia County, New York},
  author = {Peter Popenoe and G. R. Boynton and G. L. Zandle},
  year = {1964},
  doi = {10.3133/gp457},
  url = {https://pubs.usgs.gov/publication/gp457},
  note = {Source identifier: gp457}
}