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23 Mai 1869 Jahr - Dmitri Mendeleev

Beschreibung:

Classified 63 elements arranging them in ascending order of atomic weight and grouping them by similarity of properties.

Zugefügt zum Band der Zeit:

Atomic History_LaFuente

3 Okt 2018

0

0

442

Datum:

23 Mai 1869 Jahr

Jetzt

~ 156 years ago

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