@misc{indiciaef9e5384c7f64,
  title = {Lithologic descriptions of cores and exposures of Devonian shale and associated strata in Ohio along Lake Erie},
  author = {Ronald F. Broadhead and Roy Clark Kepferle and Paul Edwin Potter},
  year = {1980},
  doi = {10.3133/ofr80719},
  url = {https://pubs.usgs.gov/publication/ofr80719},
  note = {Source identifier: ofr80719}
}