@misc{indiciae6965a456bc76,
  title = {Stratigraphy, petrology, and depositional environment of the Kenwood Siltstone Member, Borden Formation (Mississippian), Kentucky and Indiana},
  author = {Roy Clark Kepferle},
  year = {1972},
  doi = {10.3133/ofr72209},
  url = {https://pubs.usgs.gov/publication/ofr72209},
  note = {Source identifier: ofr72209}
}