@misc{indiciaed39fd7bb5678,
  title = {Palynological investigations in the Pennsylvanian of Kentucky - III},
  author = {Robert M. Kosanke},
  year = {1967},
  doi = {10.3133/ofr67137},
  url = {https://pubs.usgs.gov/publication/ofr67137},
  note = {Source identifier: ofr67137}
}