@misc{indiciae0551144c4c13,
  title = {Aeromagnetic map of the Berlin quadrangle, Berkshire County, Massachusetts, Rensselaer County, New York, and Bennington County, Vermont},
  author = {Peter Popenoe and G. R. Boynton and G. L. Zandle},
  year = {1964},
  doi = {10.3133/gp449},
  url = {https://pubs.usgs.gov/publication/gp449},
  note = {Source identifier: gp449}
}