@misc{indiciae33e7f7103997,
  title = {Geologic map of the Prosperity quadrangle, southwestern Pennsylvania},
  author = {Bion H. Kent},
  year = {1972},
  doi = {10.3133/gq1003},
  url = {https://pubs.usgs.gov/publication/gq1003},
  note = {Source identifier: gq1003}
}