"Apparent" organochlorine insecticide contents of soils sampled in 1910.
D002849:Chromatography, Gas; D006846:Hydrocarbons, Halogenated / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013997:Time Factors; D014922:Wisconsin
D006846:Hydrocarbons, Halogenated; D007306:Insecticides; D012987:Soil