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22 dic 1904 anni - А. Вернер предложил современный вариант длинной формы графического изображения периодической системы элементов.

Aggiunto al nastro di tempo:

Великие открытия в ХХ веке.

13 giu 2017

2

0

4444

Data:

22 dic 1904 anni

Adesso

~ 120 years ago

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