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1869 г. – открытие Д.И. Менделеевым (1834–1907) Периодического закона химических элементов. (jan 1, 1869 – jan 1, 1869)
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Научные открытия и культурные достижения 19 века
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Алексей Георгиевский
10 Sep 2018
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Date:
jan 1, 1869
jan 1, 1869
~ 0 min
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