@misc{indiciae9d727de1073b,
  title = {Geologic map of the Garards Fort Quadrangle and part of the Osage Quadrangle, Greene County, Pennsylvania},
  author = {B.H. Kent},
  year = {1971},
  doi = {10.3133/i663},
  url = {https://pubs.usgs.gov/publication/i663},
  note = {Source identifier: i663}
}