@misc{indiciae83ea8d023406,
  title = {Triassic stratigraphy in the northern part of the Culpeper Basin, Virginia and Maryland},
  author = {K. Y. Lee},
  year = {1977},
  doi = {10.3133/b1422c},
  url = {https://pubs.usgs.gov/publication/b1422C},
  note = {Source identifier: b1422C}
}