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Riddles in Mathematics English 20.08.2014 Paperback / Softback Fr. 20.50 1-3 weeks (not available at short notice)
What Is the Name of This Book English 28.10.2011 Paperback / Softback Fr. 24.70 1-3 weeks (not available at short notice)
Godelian Puzzle Book English 21.08.2013 Paperback / Softback Fr. 24.50 2-3 weeks (title will be printed to order)
Entertaining Mathematical Puzzles English 01.10.1986 Paperback / Softback Fr. 16.50 1-3 weeks (not available at short notice)