"Polychlorodibenzo-p-dioxines Toxicologie Canada." . . "Pesticides Aspects de l'environnement." . . "National research council of Canada. Subcommitte on pesticides and industrial organic chemicals." . . "Conseil National de Recherches du Canada. Sous-Comité des Pesticides et Composés Organiques Industriels." . . "Polychlorinated dibenzo-p-dioxins Environmental aspects." . . "Milieueffecten." . . "Toxicologie." . . "Dibenzodioxinen." . . "Pesticiden." . . "Pesticides Toxicologie." . . "Polychlorinated dibenzo-p-dioxins Toxicology." . . . . . "Polychlorinated Dibenzo-P-Dioxins - Criteria For Their Effects on Man and His Environment" . . . . . . . . . . . . . . . . . "Polychlorinated dibenzo-p-dioxins: criteria for their effects on man and his environment" . "Polychlorinated dibenzo-p-dioxins: criteria for their effects on man and his environment"@en . . . "PCDD criteria"@en . "PCDD criteria" . . . . . . . . . . . . . . . . . . . . "Polychlorinated Dibenzo-p-dioxins : criteria for their effects on man and his environment" . "PCDD Criteria" . . . . . . . . . . . . . . "Polychlorinated dibenzo-p-dioxins : criteria for their effects on man and his environment"@en . "Polychlorinated dibenzo-p-dioxins : criteria for their effects on man and his environment" . . . "Dioxins toxicity." . . "Subcommitte on Water" . . "Polychlorodibenzo-p-dioxines Aspect de l'environnement Canada." . . "Subcommittee on Pesticides and Industrial Organic Chemicals" . . "Suncommittee on water." . . "National Research Council of Canada. Subcommittee on Pesticides and Industrial Organic Chemicals." . .