@misc{indiciae64acc62e2d99,
  title = {Method of analysis by the U.S. Geological Survey Organic Geochemistry Research Group: Determination of triazine and chloroacetanilide herbicides in water by solid-phase extraction and capillary-column gas chromatography/mass spectrometry with selected-ion monitoring},
  author = {L.R. Zimmerman and E.M. Thurman},
  year = {1999},
  doi = {10.3133/ofr98634},
  url = {https://pubs.usgs.gov/publication/ofr98634},
  note = {Source identifier: ofr98634}
}