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$Dr. Lawrence Fullheart working with automatic fraction collector$: Dr. Lawrence Fullheart working with automatic fraction collector

: DuPont chemists with electron microscope

: Toxicological Laboratory of the Haskell Laboratory of Industrial Toxicology

: Lab assistant taking optical activity measurements with polarimeter

: Microbalance in Chemical Department's Analytical Laboratory

: DuPont chemist working with electron microscope

: Lab assistant taking optical activity measurements with polarimeter

: Perfume research at the New Brunswick, New Jersey laboratory

: Laboratory employees at Experimental Station

: This is the way we wash our hands

: Testing laundered fabrics

: Chemist inking the press

: Judging dyed skeins

: Determining the drying time of lacquer

: A 'quartz fingernail' used to determine hardness of paint films

: Determining the degree of gloss

: Testing resin at Marshall Laboratory in Philadelphia, Pennsylvania

: Testing stencil paste

: Determining the melting point

: Determining a chemical reaction

: Chemists study slide before a background of photomicrographs

: Nobel prize winner Professor Peter Debye addresses a group of DuPont scientists

: Employee at work at the Haskell Laboratory of Industrial Toxicology

: Lab consultations at E.I. du Pont de Nemours & Company laboratories

: Employees of the Haskell Laboratory of Industrial Toxicology

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