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Subject Pollution Remove constraint Subject: Pollution

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    • 1970s

    General view of Senior Pollution Control Technician Tara Schultz inserting a stack gas sample via syringe into a Perkin-Elmer gas chromatograph in the pollution laboratory at a Bethlehem Steel Corporation plant in…

    • 1970s

    General view of Ernest Bartha, director of the Elyria City Health Department Laboratory, injecting a drug evidence sample into a Perkin-Elmer gas chromatograph. Per notations accompanying the photograph, the instrument…