@misc{indiciae130400cbad52,
  title = {The stratigraphy of the Perrysburg formation of Late Devonian age in western and west-central New York},
  author = {James F. Pepper and Wallace De Witt},
  year = {1951},
  doi = {10.3133/oc45},
  url = {https://pubs.usgs.gov/publication/oc45},
  note = {Source identifier: oc45}
}