Concentrations of glyphosate, its degradation product, aminomethylphosphonic acid, and glufosinate in ground- and surface-water, rainfall, and soil samples collected in the United States, 2001-06
Title from PDF title screen (viewed on Aug. 6, 2007).
Includes bibliographical references (pages 13-14).
Mode of access: Internet from the USGS web site. Address as of 8/21/07: http://pubs.usgs.gov/sir/2007/5122/pdf/SIR2007-5122.pdf; current access via PURL.