@misc{indiciae905d702133ff,
  title = {Nitrogen-isotope ratios of nitrate in ground water under fertilized fields, Long Island, New York},
  author = {W.J. Flipse and F.T. Bonner},
  year = {2006},
  doi = {10.1111/j.1745-6584.1985.tb02780.x},
  url = {https://pubs.usgs.gov/publication/70013409},
  note = {Source identifier: 70013409}
}