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Soroban abacus
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Calculation methods for counting (Abacus, Maya...)
Name
Soroban abacus
Vídeo
Wikipedia
wikipedia.org/...
Civilization
Japanese
Calculation methods for counting (Abacus, Maya...)
Compare Soroban abacus vs Suanpan abacus vs Maya numerals
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Last update
2010-11-22 09:14:07
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