'A type of this counting device is called suan pan in Chinese & soroban in Japanese'
abacus
BEFORE COMPUTERS: A type of this counting device is called suan pan in Chinese & soroban in Japanese
A type of this counting device is called suan pan in Chinese & soroban in Japanese
A type of this counting device is called suan pan in Chinese & soroban in Japanese
BEFORE COMPUTERS
abacus
BEFORE COMPUTERS