@misc{indiciae213da76d5ada,
  title = {Organophosphorus pesticide occurrence and distribution in surface and ground water of the United States, 1992-97},
  author = {Evelyn H. Hopkins and Daniel J. Hippe and Elizabeth A. Frick and Gary R. Buell},
  year = {2000},
  doi = {10.3133/ofr00187},
  url = {https://pubs.usgs.gov/publication/ofr00187},
  note = {Source identifier: ofr00187}
}