@misc{indiciaeeb465b25e3cd,
  title = {Aeromagnetic discovery of a Baltimore Gneiss dome in the Piedmont of northwestern Delaware and southeastern Pennsylvania},
  author = {Michael W. Higgins and George Wescott Fisher and Isidore Zietz},
  year = {1973},
  doi = {10.1130/0091-7613(1973)1<41:adoabg>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70241870},
  note = {Source identifier: 70241870}
}