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Start Over You searched for: Date 1932 to 1933 Remove constraint Date: <span class="from" data-blrl-begin="1932">1932</span> to <span class="to" data-blrl-end="1933">1933</span>-
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Series table with rare earth elements placed in two series
- 1932 (Original design)
- Circa 1957 (Date attributed to slide)
Graphic representation of the periodic table of chemical elements designed as a series table with eight groups and three subgroups in which the rare earth elements are placed in two series. This table was originated by…