toxic chemicals and environmental health risks where you live and work National Library of Medicine U.S text Bethesda,MD monographic Title from home page (viewed on JUne 2, 2006). Poisons Environmental Exposure Hazardous Substances adverse effects Hazardous Substances Toxicology HE 20.3620/2:T 66 HE 20.3620/2:T 66 http://purl.access.gpo.gov/GPO/LPS70098 http://purl.access.gpo.gov/GPO/LPS70098 20160527183837.0 300559