1. US Environmental Protection Agency, Fed. Reg. 59 (1994) 60412.
2. D.S. Carter, US Geol. Survey Open-File Report 96-459, Indianapolis, IN, 1996.
3. Proceedings of the 29th Mississippi Water Resources Conference;Scribner,1999
4. US Environmental Protection Agency website: http://www.epa.gov/pesticides/cumulative/other_cum_assessments.htm (accessed Sept. 04).
5. Hermaphroditic, demasculinized frogs after exposure to the herbicide atrazine at low ecologically relevant doses