The Hindu-Arabic Numerals c6.39
The Hindu-Arabic Numerals c6.39
- Language
- English
c6.39
⁵ This extensive subject of palpable arithmetic, essentially the history of the abacus, deserves to be treated in a work by itself.
The Hindu-Arabic Numerals c6.39
⁵ This extensive subject of palpable arithmetic, essentially the history of the abacus, deserves to be treated in a work by itself.