@misc{indiciae2aa9cc0e822f,
  title = {Palynological investigations in the Pennsylvanian of Kentucky},
  author = {Robert M. Kosanke},
  year = {1966},
  doi = {10.3133/ofr6673},
  url = {https://pubs.usgs.gov/publication/ofr6673},
  note = {Source identifier: ofr6673}
}