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30 mar 2400 ano antes da era comum - Tech: Abacus Invented

Descrição:

Abacus: the first known calculator, the abacus, was invented in Babylonia

Adicionado na linha do tempo:

Myopia (Linear Life)

12 nov 2017

0

0

1291

Data:

30 mar 2400 ano antes da era comum

Agora

~ 4429 years ago

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