@misc{indiciae8464e992b38d,
  title = {Radium in ground water from public-water supplies in northern Illinois},
  author = {Robert T. Kay},
  year = {1999},
  doi = {10.3133/fs13799},
  url = {https://pubs.usgs.gov/publication/fs13799},
  note = {Source identifier: fs13799}
}