The problem of PCBs in the Hudson River system.
D000818:Animals; D004463:Ecology; D005399:Fishes / Q000378:metabolism; D005618:Fresh Water; D009518:New York; D011078:Polychlorinated Biphenyls / Q000032:analysis; D014873:Water Pollutants / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis
D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls