@misc{indiciae6afaaa4456a8,
  title = {Aeromagnetic map of part of the Hatboro quadrangle, Bucks, Montgomery, and Philadelphia Counties, Pennsylvania},
  author = {Randolph Wilson Bromery and J. R. Henderson and G. L. Zandle},
  year = {1960},
  doi = {10.3133/gp237},
  url = {https://pubs.usgs.gov/publication/gp237},
  note = {Source identifier: gp237}
}