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Abakus-Lehrer-Wettbewerb
seit 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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