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3 dic 500 año aC - Abacus
Descripción:
counting frame & calculating tool in Europe
Had a frame that holds rods with sliding beads
First made around 500 BC
Añadido al timeline:
Timeline part 1
By
Tessa
8 nov 2017
0
0
381
fecha:
3 dic 500 año aC
Ahora mismo
~ 2526 years ago
Fotos:
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