@misc{indiciae05447e864a3d,
  title = {Water resources of southeastern Bucks County, Pennsylvania},
  author = {Jack B. Graham and John W. Mangan and Walter F. White},
  year = {1951},
  doi = {10.3133/cir104},
  url = {https://pubs.usgs.gov/publication/cir104},
  note = {Source identifier: cir104}
}