@misc{indiciae82b6a3c13d6c,
  title = {Coal facies studies in the eastern United States},
  author = {J.C. Hower and C.F. Eble},
  year = {2004},
  doi = {10.1016/j.coal.2003.03.001},
  url = {https://pubs.usgs.gov/publication/70027200},
  note = {Source identifier: 70027200}
}