@misc{indiciae6b2c3729c401,
  title = {Assessing the relationship between groundwater nitrate and animal feeding operations in Iowa (USA)},
  author = {Keith W. Zirkle and Bernard T. Nolan and Rena R. Jones and Peter J. Weyer and Mary H. Ward and David C. Wheeler},
  year = {2016},
  doi = {10.1016/j.scitotenv.2016.05.130},
  url = {https://pubs.usgs.gov/publication/70171123},
  note = {Source identifier: 70171123}
}