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Author: Zbigniew Romanowicz [ All ]

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  Title Copies
100 Math Brainteasers (Grade 7, 8, 9, 10). Arithmetic, Algebra and Geometry Brain Teasers, Puzzles, Games and Problems with Solutions: Math olympiad contest problems for elementary and middle schools 
Year: 2012 
ISBN: 1623210291 
ISBN 13: 9781623210298 
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