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Subject Insecticides Remove constraint Subject: Insecticides Subject Chemical industry Remove constraint Subject: Chemical industry Subject Flotation reagents Remove constraint Subject: Flotation reagents Date 1950 to 1954 Remove constraint Date: <span class='from'>1950</span> to <span class='to'>1954</span>

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    • 1952

    The extensive collection of Hercules advertising materials, covering the years 1913 through 1952, documents the company's growth as a major manufacturer of chemical products. A portion of the 1952 edition is digitized…