??????????? 1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN 1,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN 1,2,3,4,7,8-HEXACHLORODIBENZO-P-DIOXIN 1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 1,2,3,4,6,7,8,9-OCTACHLORODIBENZO-P-DIOXIN 1,2,4,7,8-PENTACHLORODIBENZO-P-DIOXIN 1,2,3,7,8,9-HEXACHLORODIBENZO-P-DIOXIN 1,2,3,6,7,9-HEXACHLORODIBENZO-PARA-DIOXIN 13C12-1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 13C12-1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN predioxin 13C12-1,2,3,4,6,7,8,9-OCACHLORODIBENZO-P-DIOXIN 13C12-1,2,3,4,7,8-HEXACHLORODIBENZO-P-DIOXIN 4,5-dichloro-2-(2,4-dichlorophenoxy)phenol 13C12-1,2,3,6,7,8-HEXACHLORODIBENZO-P-DIOXIN PHENOL, 4,5-DICHLORO-2-(PENTACHLOROPHENOXY)-