@misc{indiciae7a5f3257e15c,
  title = {Geochemical and palynological indicators of the paleoecology of the River Gem coal bed, Whitley County, Kentucky},
  author = {J.C. Hower and L.F. Ruppert and C.F. Eble and U.M. Graham},
  year = {1996},
  doi = {10.1016/s0166-5162(96)00014-6},
  url = {https://pubs.usgs.gov/publication/70018092},
  note = {Source identifier: 70018092}
}