Organochlorine pesticides in the atmosphere.
D000397:Air Pollution; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D003634:DDT / Q000032:analysis; D004026:Dieldrin / Q000032:analysis; D001556:Hexachlorocyclohexane / Q000032:analysis; D008131:London; D010575:Pesticides / Q000032:analysis*
D010575:Pesticides; D001556:Hexachlorocyclohexane; D003634:DDT; D004026:Dieldrin