@misc{indiciaee2b590d85ee7,
  title = {Geologic map of parts of the Lawrenceburg, Aurora, and Hooven quadrangles, Boone County, Kentucky},
  author = {W. C. Swadley},
  year = {1972},
  doi = {10.3133/gq989},
  url = {https://pubs.usgs.gov/publication/gq989},
  note = {Source identifier: gq989}
}