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1869 г. – открытие Д.И. Менделеевым (1834–1907) Периодического закона химических элементов. (1 gen 1869 anni – 1 gen 1869 anni)

Aggiunto al nastro di tempo:

Научные открытия и культурные достижения 19 века

ByАлексей Георгиевский

10 set 2018

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428

Data:

1 gen 1869 anni

1 gen 1869 anni

~ 0 min

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