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dec 19, 1869 - Открытие периодического закона химических элементов Д.И.Менеделеевым
Added to timeline:
Создание стрелы времени, отражающей стадии развития отечественной науки
By
Кристина Фелиция
5 Oct 2018
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620
Date:
dec 19, 1869
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~ 155 years ago
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