@misc{indiciae0c32a23797de,
  title = {Naturally occurring contaminants in the Piedmont and Blue Ridge crystalline-rock aquifers and Piedmont Early Mesozoic basin siliciclastic-rock aquifers, eastern United States, 1994–2008},
  author = {Melinda J. Chapman and Charles A. Cravotta and Zoltan Szabo and Bruce D. Lindsay},
  year = {2013},
  doi = {10.3133/sir20135072},
  url = {https://pubs.usgs.gov/publication/sir20135072},
  note = {Source identifier: sir20135072}
}