@misc{indiciaef3942c1f9a8b,
  title = {Nitrate in ground water and spring water near four dairy farms in North Florida, 1990-93},
  author = {W. J. Andrews},
  year = {1994},
  doi = {10.3133/wri944162},
  url = {https://pubs.usgs.gov/publication/wri944162},
  note = {Source identifier: wri944162}
}