@misc{indiciae460d8d82632b,
  title = {Occurrence of herbicides, nitrite plus nitrate, and selected trace elements in ground water from northwestern and northeastern Missouri, July 1991 and 1992},
  author = {Donald H. Wilkison and Randall D. Maley},
  year = {1994},
  doi = {10.3133/ofr94332},
  url = {https://pubs.usgs.gov/publication/ofr94332},
  note = {Source identifier: ofr94332}
}