@misc{indiciae3f36b0d6d19b,
  title = {Probability of nitrate contamination of recently recharged groundwaters in the conterminous United States},
  author = {B. T. Nolan and K.J. Hitt and B. C. Ruddy},
  year = {2002},
  doi = {10.1021/es0113854},
  url = {https://pubs.usgs.gov/publication/70024706},
  note = {Source identifier: 70024706}
}