@misc{indiciaecf3e9f0512c9,
  title = {Measured sections of Ordovician strata in south-central Kentucky},
  author = {Gordon Whitney Weir and Warren Lee Peterson and W. C. Swadley},
  year = {1979},
  doi = {10.3133/ofr79834},
  url = {https://pubs.usgs.gov/publication/ofr79834},
  note = {Source identifier: ofr79834}
}