@misc{indiciaea7d590c5974f,
  title = {Aeromagnetic map of the Terre Hill quadrangle, Lancaster and Berks Counties, Pennsylvania},
  author = {Randolph Wilson Bromery and G. L. Zandle},
  year = {1961},
  doi = {10.3133/gp242},
  url = {https://pubs.usgs.gov/publication/gp242},
  note = {Source identifier: gp242}
}