Born-Digital or AnalogAnalogTranscriptPesticides President of Denver firm ( Julius Hyman & Company ) discovers chemical compound, chlordane, which is more effective as insecticide than DDT. News My 8 . 1947 p.1 Insect killing. chemicals made in Denver get official names. Post Ja 15 1950 .p.14 Nobel prize winner's products made here. Post N 16 150 p.41CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
