@misc{indiciae5c631d96ead6,
  title = {Interpretation of Cumberland Escarpment and Highland Rim, south-central Tennessee and northeast Alabama},
  author = {J.T. Hack},
  year = {1966},
  doi = {10.3133/pp524c},
  url = {https://pubs.usgs.gov/publication/pp524C},
  note = {Source identifier: pp524C}
}