@misc{indiciaec93a7100b2de,
  title = {Relation of landscape position and irrigation to concentrations of alachlor, atrazine, and selected degradates in regolith in northeastern Nebraska},
  author = {Ingrid M. Verstraeten and D. T. Lewis and D. L. McCallister and A. Parkhurst and E.M. Thurman},
  year = {2009},
  doi = {10.1021/bk-1996-0630.ch015},
  url = {https://pubs.usgs.gov/publication/70017769},
  note = {Source identifier: 70017769}
}