@misc{indiciaefd146797431e,
  title = {Nitrogen isotopes as indicators of nitrate sources in Minnesota sand-plain aquifers},
  author = {Stephen C. Komor and Henry W. Anderson},
  year = {2005},
  doi = {10.1111/j.1745-6584.1993.tb01818.x},
  url = {https://pubs.usgs.gov/publication/70018348},
  note = {Source identifier: 70018348}
}