@misc{indiciae37ccaed6762b,
  title = {Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of organophosphate pesticides in bottom sediment by gas chromatography with flame photometric detection},
  author = {Virendra Kumar Jha and Duane S. Wydoski},
  year = {2003},
  doi = {10.3133/wri024222},
  url = {https://pubs.usgs.gov/publication/wri024222},
  note = {Source identifier: wri024222}
}