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may 20, 3646 BC - Цемент
Description:
Цемент (Египет)
Added to timeline:
История технологических изобретений (Древний мир-Античность-Средние века) Давыдов
By
vanya
24 Nov 2017
0
0
582
Date:
may 20, 3646 BC
Now
~ 5676 years ago
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