@misc{indiciaeb5e43e5a4cce,
  title = {Importance of the Mississippi River Basin for investigating agricultural–chemical contamination of the hydrologic cycle},
  author = {Dana W. Kolpin},
  year = {2000},
  doi = {10.1016/s0048-9697(99)00530-6},
  url = {https://pubs.usgs.gov/publication/70168344},
  note = {Source identifier: 70168344}
}