@misc{indiciaea0bd2388a1fa,
  title = {Trends in pesticide concentrations and use for major rivers of the United States},
  author = {Karen R. Ryberg and Robert J. Gilliom},
  year = {2015},
  doi = {10.1016/j.scitotenv.2015.06.095},
  url = {https://pubs.usgs.gov/publication/70157110},
  note = {Source identifier: 70157110}
}