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8 дек 2400 г. до нашей эры - Dust Abacus

Описание:

Lines in dust and pebbles were used as an early abacus.

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ByPiston Phantom

10 окт 2018

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365

Дата:

8 дек 2400 г. до нашей эры

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~ 4429 г назад

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