TY  - RPRT
TI  - Sources and preparation of data for assessing trends in concentrations of pesticides in streams of the United States, 1992-2006
AU  - Jeffrey D. Martin
PY  - 2009
DO  - 10.3133/sir20095062
UR  - https://pubs.usgs.gov/publication/sir20095062
ID  - sir20095062
ER  -