@misc{indiciaea57bce0894ba,
  title = {Transgressive channel filling in the Breathitt Formation (Upper Carboniferous), Eastern Kentucky Coal Field, USA},
  author = {S.F. Greb and D.R. Chesnut},
  year = {1992},
  doi = {10.1016/0037-0738(92)90093-7},
  url = {https://pubs.usgs.gov/publication/70016661},
  note = {Source identifier: 70016661}
}