@misc{indiciae1f354e0a88ed,
  title = {Geology of the Bernstadt quadrangle, Kentucky},
  author = {Norman L. Hatch},
  year = {1963},
  doi = {10.3133/gq202},
  url = {https://pubs.usgs.gov/publication/gq202},
  note = {Source identifier: gq202}
}