Analysis of Polychlorinated Dibenzofurans and Polychlorinated Dibenzodioxins: I – An Inter- and Intra-Laboratory Evaluation of Various Protocols for Congener Specific Analyses of Sediments and Residues Publication Attachment: 90-71.pdf Authors: Clarke, AN, Clarke, JH, Devaney, RJ, DeRoos, FL, Miille, MJ Year: 1990