@misc{indiciaec0e1dfc48a84,
  title = {Geologic map of the Paducah East quadrangle in western Kentucky},
  author = {Wilds W. Olive},
  year = {1966},
  doi = {10.3133/gq531},
  url = {https://pubs.usgs.gov/publication/gq531},
  note = {Source identifier: gq531}
}