@misc{indiciaed237e19267c3,
  title = {Data on chlorofluorocarbons (CCl3F and CCl2F2) as dating tools and hydrologic tracers in shallow ground water of the Delmarva Peninsula},
  author = {Niel Plummer and S.A. Dunkle and Eurybiades Busenberg},
  year = {1993},
  doi = {10.3133/ofr93484},
  url = {https://pubs.usgs.gov/publication/ofr93484},
  note = {Source identifier: ofr93484}
}