@misc{indiciaeea60ebae93bb,
  title = {Organic petrology and geochemistry of the Sunbury and Ohio Shales in eastern Kentucky and southeastern Ohio},
  author = {Cortland F. Eble and Paul C. Hackley and Thomas M. Parris and Stephen F. Greb},
  year = {2021},
  doi = {10.1306/09242019089},
  url = {https://pubs.usgs.gov/publication/70219029},
  note = {Source identifier: 70219029}
}