| nih.gov | Specialized Information Services - U. S. National Library Of Medicine |
| usda.gov | Food Safety Research Information Office: Pesticides/Pesticide Residues |
| inchem.org | International Programme on Chemical Safety INCHEM Database |
| heraproject.com | Human and Environmental Risk Assessment |
| ewg.org | Environmental Working Group || Bodyburden |
| chemicalindustryarchives.org | Chemical Industry Archives |
| bancca.org | Ban CCA.org |
| chromiumcentral.com | Chromium Central |
| cdc.gov | Agency for Toxic Substances and Disease Registry (ATSDR) |
| trifacts.org | TRIFacts.org |
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