@misc{indiciae01868af0a4b9,
  title = {Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin: from Ashland County, Ohio, through southwestern Pennsylvania, to Preston County, West Virginia},
  author = {Robert T. Ryder},
  year = {2014},
  doi = {10.3133/pp1708e.3.1},
  url = {https://pubs.usgs.gov/publication/pp1708E.3.1},
  note = {Source identifier: pp1708E.3.1}
}