Polychlorinated biphenyl residues in silos in the United States.
D000383:Agriculture; D000818:Animals; D002417:Cattle; D007880:Legislation, Drug; D008892:Milk / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D014481:United States
D010573:Pesticide Residues; D011078:Polychlorinated Biphenyls