@misc{indiciae73fb914c395f,
  title = {Geologic map of the Bedford quadrangle, north-central Kentucky},
  author = {W. C. Swadley},
  year = {1977},
  doi = {10.3133/gq1409},
  url = {https://pubs.usgs.gov/publication/gq1409},
  note = {Source identifier: gq1409}
}