@misc{indiciaec32e7eeab36e,
  title = {NLEAP/GIS approach for identifying and mitigating regional nitrate-nitrogen leaching},
  author = {M.J. Shaffer and M.D. Hall and B.K. Wylie and D.G. Wagner},
  year = {2015},
  doi = {10.2136/sssaspecpub48.c17},
  url = {https://pubs.usgs.gov/publication/70182513},
  note = {Source identifier: 70182513}
}