@misc{indiciae5a286a9184c5,
  title = {Geology of the Bedford shale and Berea sandstone in the Appalachian Basin},
  author = {J. F. Pepper and Jr. De Witt and D. F. Demarest},
  year = {1954},
  doi = {10.1126/science.119.3094.512.b},
  url = {https://pubs.usgs.gov/publication/70010724},
  note = {Source identifier: 70010724}
}