@misc{indiciae4b8f50b52cfe,
  title = {Pesticides in surface water in agricultural and urban areas of the South Platte River basin, from Denver, Colorado, to North Platte, Nebraska, 1993-94},
  author = {R. A. Kimbrough and D. W. Litke},
  year = {1998},
  doi = {10.3133/wri974230},
  url = {https://pubs.usgs.gov/publication/wri974230},
  note = {Source identifier: wri974230}
}