@misc{indiciae369d5983c985,
  title = {Geology of the Eli quadrangle, Kentucky},
  author = {Robert E. Thaden and Richard Quintin Lewis},
  year = {1965},
  doi = {10.3133/gq393},
  url = {https://pubs.usgs.gov/publication/gq393},
  note = {Source identifier: gq393}
}