@misc{indiciae90b46b2fc58a,
  title = {Measured sections of Upper Ordovician strata in central Kentucky},
  author = {Gordon Whitney Weir and Warren Lee Peterson and Roy Clark Kepferle},
  year = {1979},
  doi = {10.3133/ofr79835},
  url = {https://pubs.usgs.gov/publication/ofr79835},
  note = {Source identifier: ofr79835}
}