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- 18:15, 23 May 2016 Debra Tabron (talk | contribs) uploaded File:USEPA-1993-Provisional Guidance for quantitative Risk Assessment....pdf (U.S. Environmental Protection Agency (USEPA). Provisional Guidance for Quantitative Risk Assessment of Polycyclic Aromatic Hydrocarbons. 1993, EPA 600-R-93-089)