@misc{indiciaea270cbdf34a8,
  title = {Triassic-Jurassic stratigraphy of the Culpeper and Barboursville basins, Virginia and Maryland},
  author = {K. Y. Lee and A.J. Froelich},
  year = {1989},
  doi = {10.3133/pp1472},
  url = {https://pubs.usgs.gov/publication/pp1472},
  note = {Source identifier: pp1472}
}