TY  - RPRT
TI  - 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
AU  - Mark W. Sandstrom
AU  - Max E. Stroppel
AU  - William T. Foreman
AU  - Michael P. Schroeder
PY  - 2001
DO  - 10.3133/wri20014098
UR  - https://pubs.usgs.gov/publication/wri20014098
ID  - wri20014098
ER  -