TY  - RPRT
TI  - Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group—Determination of glyphosate, aminomethylphosphonic acid, and glufonsinate in water using online solid-phase extraction and high-performance liquid chromatography/mass spectrometry
AU  - E.A. Lee
AU  - A.P. Strahan
AU  - E.M. Thurman
PY  - 2001
DO  - 10.3133/ofr01454
UR  - https://pubs.usgs.gov/publication/ofr01454
ID  - ofr01454
ER  -