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1 ore 24 min, 3 dic 1869 anni - Открытие Менделеевым одного из фундаментальных законов природы переодический закон химическх элементов

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ByЮлия Отева

26 dic 2017

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1 ore 24 min, 3 dic 1869 anni

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~ 155 years ago

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