@misc{indiciae970302e8b7f4,
  title = {Coal Geology of the Seitz Quadrangle, Breathitt, Magoffin, Morgan, and Wolfe Counties, Kentucky},
  author = {M. J. Bergin},
  year = {1962},
  doi = {10.3133/b1122c},
  url = {https://pubs.usgs.gov/publication/b1122C},
  note = {Source identifier: b1122C}
}