title: Indoor air is a major source of PCBs.
authors: Kellyn
authors: K
authors: Betts
mesh_terms: D016902:Air Pollution, Indoor / Q000032:analysis*; D002947:Cities; D004739:England; D006794:Household Articles; D009864:Ontario; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000737:chemistry
chemical_list: D011078:Polychlorinated Biphenyls