@misc{indiciae893195a9654e,
  title = {Vulnerability of ground water to atrazine leaching in Kent County, Michigan},
  author = {D. J. Holtschlag and C. L. Luukkonen},
  year = {1997},
  doi = {10.3133/wri964198},
  url = {https://pubs.usgs.gov/publication/wri964198},
  note = {Source identifier: wri964198}
}