@misc{indiciaec5b2d17a60e6,
  title = {Environmental tracers for age dating young ground water},
  author = {L.N. Plummer and R. L. Michel and E.M. Thurman and Pierre D. Glynn},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70198700},
  note = {Source identifier: 70198700}
}