@misc{indiciae2e20f90a1c7d,
  title = {Reconnaissance map of surficial geology of Campton Quadrangle, Kentucky River Area Development District, eastern Kentucky},
  author = {Wayne L. Newell},
  year = {1975},
  doi = {10.3133/ofr7580},
  url = {https://pubs.usgs.gov/publication/ofr7580},
  note = {Source identifier: ofr7580}
}