@misc{indiciae408c2487416a,
  title = {Stratigraphy of the Silurian outcrop belt on the east side of the Cincinnati Arch in Kentucky, with revisions in the nomenclature},
  author = {Robert C. McDowell},
  year = {1983},
  doi = {10.3133/pp1151f},
  url = {https://pubs.usgs.gov/publication/pp1151F},
  note = {Source identifier: pp1151F}
}