@misc{indiciaec067c7d5ee5d,
  title = {Discharge of herbicides from the Mississippi River Basin to the Gulf of Mexico, 1991-97},
  author = {Gregory M. Clark and Donald A. Goolsby},
  year = {1999},
  doi = {10.3133/fs16398},
  url = {https://pubs.usgs.gov/publication/fs16398},
  note = {Source identifier: fs16398}
}