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Concurso de tutores de ábaco
desde 1999

Abacus Tutor competition 2006
Photo of the Abacus tutor competition held on 2006

Abacus Tutor competition 2006
Photo of the Abacus tutor competition held on 2006

Abacus Tutor competition 2006
Photo of the Abacus tutor competition held on 2006

Abacus Tutor competition 2006
Photo of the Abacus tutor competition held on 2006

Abacus Tutor competition 2006
Photo of the Abacus tutor competition held on 2006

Abacus Tutor competition 2006
Photo of the Abacus tutor competition held on 2006

Abacus Tutor competition 2006
Photo of the Abacus tutor competition held on 2006
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