National Soils Monitoring Program--six states, 1967.
D001151:Arsenic / Q000032:analysis; D002849:Chromatography, Gas; D003634:DDT / Q000032:analysis; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D007306:Insecticides / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D013455:Sulfur / Q000032:analysis; D014481:United States
D007306:Insecticides; D010573:Pesticide Residues; D012987:Soil; D003633:Dichlorodiphenyl Dichloroethylene; D013455:Sulfur; D003634:DDT; D001151:Arsenic