@misc{indiciae04075cd417c4,
  title = {Ground water of the Piedmont and Blue Ridge provinces in the Southeastern States},
  author = {H. E. LeGrand},
  year = {1967},
  doi = {10.3133/cir538},
  url = {https://pubs.usgs.gov/publication/cir538},
  note = {Source identifier: cir538}
}