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Subject Scientific illustration Remove constraint Subject: Scientific illustration Date 1937 to 1939 Remove constraint Date: <span class='from'>1937</span> to <span class='to'>1939</span>

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    • circa 1957 (Date attributed to slide)
    • 1938 (Original design)

    Graphic representation of the periodic table of chemical elements in the style of parallel lines, with the single lines representing subshells and the groups of parallel lines representing different shells. This table…

    • 1937 – 1945 (Original design)
    • circa 1957 (Date attributed to slide)

    Graphic representation of the periodic table of chemical elements constructed as a triangle. This type of table was originated by Henry A. Wagner and Harold Simmons Booth in 1945 after an incomplete drawing by Emil V.…