@misc{indiciae4e2a9731d0bd,
  title = {Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory - Determination of moderate-use pesticides and selected degradates in water by C-18 solid-phase extraction and gas chromatography/mass spectrometry},
  author = {Mark W. Sandstrom and Max E. Stroppel and William T. Foreman and Michael P. Schroeder},
  year = {2001},
  doi = {10.3133/wri20014098},
  url = {https://pubs.usgs.gov/publication/wri20014098},
  note = {Source identifier: wri20014098}
}