@misc{indiciae1a9e24806d9c,
  title = {Hydrologic and land-use factors associated with herbicides and nitrate in near-surface aquifers},
  author = {Michael R. Burkart and Dana W. Kolpin},
  year = {1993},
  doi = {10.2134/jeq1993.00472425002200040002x},
  url = {https://pubs.usgs.gov/publication/70169050},
  note = {Source identifier: 70169050}
}