@misc{indiciae6a5713e8f71b,
  title = {Pre-quaternary geology of the Bristol quadrangle, New Jersey-Pennsylvania},
  author = {James Patrick Owens and James P. Minard},
  year = {1964},
  doi = {10.3133/gq342},
  url = {https://pubs.usgs.gov/publication/gq342},
  note = {Source identifier: gq342}
}