@misc{indiciaea393685d9360,
  title = {Preface: Insights from environmental tracers in groundwater systems},
  author = {Ward E. Sanford and Werner Aeschbach-Hertig and Andrew L. Herczeg},
  year = {2010},
  doi = {10.1007/s10040-010-0687-9},
  url = {https://pubs.usgs.gov/publication/70042733},
  note = {Source identifier: 70042733}
}