@misc{indiciae6ac067cb0df3,
  title = {Geologic map of the Sandy Hook quadrangle, Elliott and Morgan Counties, Kentucky},
  author = {Kenneth John Englund and A. Otis Delaney},
  year = {1966},
  doi = {10.3133/gq521},
  url = {https://pubs.usgs.gov/publication/gq521},
  note = {Source identifier: gq521}
}