chinese abacus
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
chinese abacus |
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| navigate by keyword : abacus bead calculate china chinese clever complicated contrivance creation invention number numbers old tool yellow |
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| Chinese abacus is an old tool used for calculating complicated numbers in old China.Few of them is used today. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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