@misc{indiciae2de8c3019000,
  title = {Organic geochemistry and petrology of Devonian shale in eastern Ohio: Implications for petroleum systems assessment},
  author = {Paul C. Hackley and Robert T. Ryder},
  year = {2021},
  doi = {10.1306/08192019076},
  url = {https://pubs.usgs.gov/publication/70219028},
  note = {Source identifier: 70219028}
}