Complete Abacus Mind Math: Step by Step Guide to Mastering Mind Math with a Japanese Abacus
Abacus Mind Math Level 1 Workbook 1 of 2: Excel at Mind Math with Soroban, a Japanese Abacus (Abacus Mind Math - Level - 1 Complete Set: Instruction Book, Workbook 1 of 2, Workbook 2 of 2)
Vaupan Digit Standard Abacus Soroban Professional 17 Column (10.2 inch) Math Abacus, Math Calculating Tool with Reset Button for Adults Kids(Brown)
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D**O
Good item, quick shipping
Good item, good quality
A**Z
Excelente libro para iniciar la practica en el abaco soroban.
me agrada que en un manual vienen los ejercicios sencillos
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