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japanese abacus -- japanese abacus (Site not responding. Last check: 2007-10-20) |
 | | Das Arithmeum » Museumsshop » The japanese Abacus |
 | | Japanese Abacus: It's Use and Theory, by Takashi Kojima, Charles E Tuttle Co., ISBN: 0804802785 Advanced Abacus: Japanese Theory and Practice, by Takashi Kojima, Charles E Tuttle Co., ISBN... |
 | | Japanese abacus The Japanese eliminated one bead each from the upper and lower deck in each column of the Chinese abacus, because these beads are redundant. |
| www.abacusac.com /japaneseabacus (3328 words) |
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