@misc{indiciae5e01eab187a6,
  title = {Aeromagnetic map of the Telford quadrangle, Montgomery and Bucks Counties, Pennsylvania},
  author = {Randolph Wilson Bromery and G. L. Zandle},
  year = {1960},
  doi = {10.3133/gp262},
  url = {https://pubs.usgs.gov/publication/gp262},
  note = {Source identifier: gp262}
}