1,1'-Biphenyl,2,2',3,4,4',6-hexachloro-, (?à)-; (?à)-2,2',3,4,4',6-Hexachloro-1,1'-biphenyl;(?à)-PCB 139; 2,2',3,4,4',6-Hexachloro-1,1'-biphenyl;2,2',3,4,4',6-Hexachlorobiphenyl; 2,3,4,6,2',4'-Hexachlorobiphenyl; PCB 139
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