@misc{indiciaef194fab10531,
  title = {Geologic map of the Lexington East quadrangle, Fayette and Bourbon Counties, Kentucky},
  author = {William Charles MacQuown and Ernest Dobrovolny},
  year = {1968},
  doi = {10.3133/gq683},
  url = {https://pubs.usgs.gov/publication/gq683},
  note = {Source identifier: gq683}
}