abacus, significado de abacus en el Longman Dictionary of Contemporary English

abacus significado, definición, qué es abacus: a frame with small balls that can be sli: Conozca más.

abacus - Wiktionary, the free dictionary

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ABACUS definition and meaning

The Different Abacus Meanings All In English

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Abacus, Definition, Types & History - Video & Lesson Transcript