title: Pesticides in selected Western streams--1968-71.
mesh_terms: D002849:Chromatography, Gas; D003634:DDT / Q000032:analysis; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis; D005618:Fresh Water; D006540:Herbicides / Q000032:analysis*; D007306:Insecticides / Q000032:analysis; D008722:Methods; D009943:Organophosphorus Compounds; D009946:Organothiophosphorus Compounds; D010575:Pesticides / Q000032:analysis*; D013997:Time Factors; D014481:United States; D014877:Water Pollution, Chemical / Q000032:analysis*
chemical_list: D006540:Herbicides; D007306:Insecticides; D009943:Organophosphorus Compounds; D009946:Organothiophosphorus Compounds; D010575:Pesticides; D003634:DDT; D003632:Dichlorodiphenyldichloroethane