@misc{indiciaec75d9875f85d,
  title = {Surficial geologic map of Kentucky River Area Development District, southeastern Kentucky},
  author = {Wayne L. Newell},
  year = {1975},
  doi = {10.3133/ofr7583},
  url = {https://pubs.usgs.gov/publication/ofr7583},
  note = {Source identifier: ofr7583}
}