@misc{indiciae090067ed1d93,
  title = {Using spring-water chemistry to assess groundwater contamination and ages of shallow and deep ground water flow systems},
  author = {B. G. Katz and J.K. Bohlke and D. Hornsby},
  year = {2002},
  url = {https://pubs.usgs.gov/publication/70188326},
  note = {Source identifier: 70188326}
}