@misc{indiciaecfc722b2ab9c,
  title = {Aeromagnetic map of part of the West Granville quadrangle, Hampden County, Massachusetts, and Hartford County, Connecticut},
  author = {G. R. Boynton and Peter Popenoe and G. L. Zandle},
  year = {1965},
  doi = {10.3133/gp536},
  url = {https://pubs.usgs.gov/publication/gp536},
  note = {Source identifier: gp536}
}