@misc{indiciae2d9216a8aa71,
  title = {Map of overdip slopes that can affect landsliding in Armstrong County, Pennsylvania},
  author = {William R. Kohl},
  year = {1976},
  doi = {10.3133/mf730},
  url = {https://pubs.usgs.gov/publication/mf730},
  note = {Source identifier: mf730}
}