@misc{indiciae8e38e6000db3,
  title = {Concentration of selected herbicides, herbicide degradation products, and nutrients in the lower Mississippi River, Louisiana, April 1991 through December 2003},
  author = {Elisabeth A. Scribner and Donald A. Goolsby and William A. Battaglin and Michael T. Meyer and E.M. Thurman},
  year = {2006},
  doi = {10.3133/ds165},
  url = {https://pubs.usgs.gov/publication/ds165},
  note = {Source identifier: ds165}
}