@misc{indiciaef2c8348fdef5,
  title = {Geologic map of the Preston quadrangle, Bath and Montgomery Counties, Kentucky},
  author = {Gordon Whitney Weir and Robert C. McDowell},
  year = {1976},
  doi = {10.3133/gq1334},
  url = {https://pubs.usgs.gov/publication/gq1334},
  note = {Source identifier: gq1334}
}