@misc{indiciae18cc7e4cbedb,
  title = {Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of organophosphate pesticides in whole water by continuous liquid-liquid extraction and capillary-column gas chromatography with flame photometric detection},
  author = {Virendra K. Jha and Duane S. Wydoski},
  year = {2003},
  doi = {10.3133/wri034139},
  url = {https://pubs.usgs.gov/publication/wri034139},
  note = {Source identifier: wri034139}
}