@misc{indiciae2b19b7fdfb14,
  title = {Tectonic evolution in central and eastern Kentucky : a multidisciplinary study of surface and subsurface structure},
  author = {Douglas F. B. Black},
  year = {1989},
  doi = {10.3133/ofr89106},
  url = {https://pubs.usgs.gov/publication/ofr89106},
  note = {Source identifier: ofr89106}
}