@misc{indiciaea0844e9673aa,
  title = {Ground-water levels in the lower Paleozoic and Precambrian crystalline rocks, southeastern Chester County, Pennsylvania, July and August 1986},
  author = {John A. Garges},
  year = {1987},
  doi = {10.3133/wri864352},
  url = {https://pubs.usgs.gov/publication/wri864352},
  note = {Source identifier: wri864352}
}