@misc{indiciae0d83c3f73d4a,
  title = {Oil and gas fields of Greene County, PA},
  author = {Ralph Walter Stone and Frederick Gardner Clapp},
  year = {1907},
  doi = {10.3133/b304},
  url = {https://pubs.usgs.gov/publication/b304},
  note = {Source identifier: b304}
}