@misc{indiciaeb951cab617f3,
  title = {Geologic map of the Seitz Quadrangle, eastern Kentucky},
  author = {Richard W. Spengler},
  year = {1976},
  doi = {10.3133/ofr76725},
  url = {https://pubs.usgs.gov/publication/ofr76725},
  note = {Source identifier: ofr76725}
}