@misc{indiciaecf11ca846654,
  title = {Geology of the Shopville quadrangle, Kentucky},
  author = {Norman L. Hatch},
  year = {1964},
  doi = {10.3133/gq282},
  url = {https://pubs.usgs.gov/publication/gq282},
  note = {Source identifier: gq282}
}