@misc{indiciaef434ff1ab08a,
  title = {Ohio shale (Devonian), SDO-1, from Rowan County, Kentucky},
  author = {R.C. Kepferle and Wallace De Witt and F.J. Flanagan},
  year = {1985},
  doi = {10.3133/ofr85145},
  url = {https://pubs.usgs.gov/publication/ofr85145},
  note = {Source identifier: ofr85145}
}