@misc{indiciaec5cd9b5f418d,
  title = {Hydrogeology and ground-water quality of Valley Forge National Historical Park, Montgomery County, Pennsylvania},
  author = {Ronald A. Sloto and B. Craig McManus},
  year = {1996},
  doi = {10.3133/wri964120},
  url = {https://pubs.usgs.gov/publication/wri964120},
  note = {Source identifier: wri964120}
}