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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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23 feb 400 año aC - Абак- первый счетный инструмент
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Анна Рычкова
19 sep 2017
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704
fecha:
23 feb 400 año aC
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~ 2427 years ago
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