@misc{indiciae79b355c62ee1,
  title = {Geology of the Jackson quadrangle, Kentucky},
  author = {G.E. Prichard and J. E. Johnston},
  year = {1963},
  doi = {10.3133/gq205},
  url = {https://pubs.usgs.gov/publication/gq205},
  note = {Source identifier: gq205}
}