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Se utiliza el ábaco en antiguas civilizaciones como la china o la sumeria, la primera herramienta para realizar sumas y restas. (aug 24, 2700 BC – jan 1, 0)
Added to timeline:
Tarea
By
jatzini
13 Sep 2018
0
0
429
Date:
aug 24, 2700 BC
jan 1, 0
~ 1 years
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