@misc{indiciaeed3c30b324d0,
  title = {Stratigraphy of Onesquethaw stage of Devonian in West Virginia and bordering States},
  author = {J.M. Dennison},
  year = {1961},
  url = {https://pubs.usgs.gov/publication/70198519},
  note = {Source identifier: 70198519}
}