@misc{indiciaeb737d67c6241,
  title = {Aeromagnetic map of part of the Coatesville quadrangle, Chester County, Pennsylvania},
  author = {Randolph Wilson Bromery and J. R. Henderson and G. L. Zandle},
  year = {1960},
  doi = {10.3133/gp225},
  url = {https://pubs.usgs.gov/publication/gp225},
  note = {Source identifier: gp225}
}