@misc{indiciaea6952e3ed808,
  title = {Measured sections of Ordovician strata in northeast Kentucky},
  author = {Gordon Whitney Weir and Warren Lee Peterson and W. C. Swadley},
  year = {1979},
  doi = {10.3133/ofr791663},
  url = {https://pubs.usgs.gov/publication/ofr791663},
  note = {Source identifier: ofr791663}
}