@misc{indiciaee8338a7196bf,
  title = {Coal geology of Adams, Blaine, Richardson, and Sitka quadrangles, Kentucky, and Louisa quadrangle, Kentucky-West Virginia},
  author = {Philip Thayer Hayes and Carol Waite Connor},
  year = {1982},
  doi = {10.3133/b1526},
  url = {https://pubs.usgs.gov/publication/b1526},
  note = {Source identifier: b1526}
}