@misc{indiciae990e8c48a4be,
  title = {Geologic map of the Dycusburg quadrangle, western Kentucky},
  author = {Dewey Harold Amos and William Henry Hays},
  year = {1974},
  doi = {10.3133/gq1149},
  url = {https://pubs.usgs.gov/publication/gq1149},
  note = {Source identifier: gq1149}
}