@misc{indiciae9d360edc6ea8,
  title = {Geologic map of the Bee Spring quadrangle, Edmonson and Grayson Counties, Kentucky},
  author = {Benjamin Gildersleeve},
  year = {1968},
  doi = {10.3133/gq757},
  url = {https://pubs.usgs.gov/publication/gq757},
  note = {Source identifier: gq757}
}