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اسمارت اکادمی ایران - The Ripple Effects and the Future Prospects of Abacus Learning.

The Ripple Effects and the Future Prospects of Abacus Learning.

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Category: مقالات علمی ژاپنی
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January 20, 2001 / by Ms. Shizuko Amaiwa Professor, Shinshu University, College of Education