@misc{indiciae9a549b1d0fa7,
  title = {Foxburg-Clarion folio, Pennsylvania},
  author = {Eugene Wesley Shaw and Edwin F. Lines and Malcolm John Munn},
  year = {1911},
  doi = {10.3133/gf178},
  url = {https://pubs.usgs.gov/publication/gf178},
  note = {Source identifier: gf178}
}