@misc{indiciae51407e46062b,
  title = {Baseline models of trace elements in major aquifers of the United States},
  author = {L. Lee and D. Helsel},
  year = {2005},
  doi = {10.1016/j.apgeochem.2005.03.008},
  url = {https://pubs.usgs.gov/publication/70029664},
  note = {Source identifier: 70029664}
}