@misc{indiciae845a76ebd4a2,
  title = {Aeromagnetic map of Connecticut},
  author = {Isidore Zietz and J.R. Kirby and F. P. Gilbert},
  year = {1974},
  doi = {10.3133/gp897},
  url = {https://pubs.usgs.gov/publication/gp897},
  note = {Source identifier: gp897}
}