@misc{indiciae188c4d61f2fb,
  title = {Geologic map of the Hollyhill quadrangle, McCreary and Whitley Counties, Kentucky},
  author = {Robert Ahlberg Loney},
  year = {1967},
  doi = {10.3133/gq615},
  url = {https://pubs.usgs.gov/publication/gq615},
  note = {Source identifier: gq615}
}