title: Intensive studies of DDT residues in forest soil.
mesh_terms: D002849:Chromatography, Gas; D003634:DDT / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013223:Statistics as Topic; D013997:Time Factors
chemical_list: D010573:Pesticide Residues; D012987:Soil; D003634:DDT