@misc{indiciae077211c9c8b9,
  title = {Geology of the Amity quadrangle, Pennsylvania},
  author = {Henry L. Berryhill},
  year = {1964},
  doi = {10.3133/gq296},
  url = {https://pubs.usgs.gov/publication/gq296},
  note = {Source identifier: gq296}
}