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Date: 2013-01-18 12:45:03Astrochemistry Carcinogens Origin of life Coal Coal tar Materials Aromatic hydrocarbon Polycyclic aromatic hydrocarbon Road Chemistry Medicine Environment | Chemosphere[removed]–7 Contents lists available at SciVerse ScienceDirect Chemosphere journal homepage: www.elsevier.com/locate/chemosphereAdd to Reading ListSource URL: tx.usgs.govDownload Document from Source WebsiteFile Size: 317,87 KBShare Document on Facebook |