@misc{indiciae8443c5e890ca,
  title = {Aeromagnetic map of parts of the Lambertville, Lumberville, and Stockton quadrangles, New Jersey and Pennsylvania},
  author = {G. R. Boynton and D.R. Pittillo and G. L. Zandle},
  year = {1966},
  doi = {10.3133/gp553},
  url = {https://pubs.usgs.gov/publication/gp553},
  note = {Source identifier: gp553}
}