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![Riddles of the Sphinx and Other Mathematical Puzzle Tales](http://cdn.ketabkoo.com/covers/2/251954-n.jpg)
Riddles of the Sphinx and Other Mathematical Puzzle Tales
Martin Gardner, 1987![Riddles of the sphinx, and other mathematical puzzle tales](http://cdn.ketabkoo.com/covers/2/251955-n.jpg)
Riddles of the sphinx, and other mathematical puzzle tales
Martin Gardner, 1987![Riddles of the sphinx, and other mathematical puzzle tales](http://cdn.ketabkoo.com/covers/2/251956-n.jpg)
Riddles of the sphinx, and other mathematical puzzle tales
Martin Gardner, 1987![Science Fiction Puzzle Tales](http://cdn.ketabkoo.com/covers/2/251958-n.jpg)
Science Fiction Puzzle Tales
Martin Gardner, 1981![Science Fiction Puzzle Tales](http://cdn.ketabkoo.com/covers/2/251959-n.jpg)
Science Fiction Puzzle Tales
Martin Gardner, 1983![Science Fiction Puzzle Tales](http://cdn.ketabkoo.com/covers/2/251960-n.jpg)
Science Fiction Puzzle Tales
Martin Gardner, 1981![Searching Science](http://cdn.ketabkoo.com/covers/2/251961-n.jpg)
Searching Science
Martin Gardner, 1998![Mathematische Knobeleien](http://cdn.ketabkoo.com/covers/2/253952-n.jpg)
Mathematische Knobeleien
Martin Gardner (auth.), 1973![Mathematische Knobeleien](http://cdn.ketabkoo.com/covers/2/253953-n.jpg)
Mathematische Knobeleien
Martin Gardner (auth.), 1984![Mathematische Planetenzauberei. Space puzzles](http://cdn.ketabkoo.com/covers/2/253954-n.jpg)
Mathematische Planetenzauberei. Space puzzles
Martin Gardner![Mathematische Rätsel und Probleme](http://cdn.ketabkoo.com/covers/2/253955-n.jpg)
Mathematische Rätsel und Probleme
Martin Gardner (auth.), 1964![Mathematische Rätsel und Probleme](http://cdn.ketabkoo.com/covers/2/253956-n.jpg)
Mathematische Rätsel und Probleme
Martin Gardner (auth.), 1968![Mathematisches Labyrinth: Neue Probleme für die Knobelgemeinde](http://cdn.ketabkoo.com/covers/2/253957-n.jpg)
Mathematisches Labyrinth: Neue Probleme für die Knobelgemeinde
Martin Gardner (auth.), 1979![Mental Magic. Surefire Tricks to Amaze Your Friends](http://cdn.ketabkoo.com/covers/2/253958-n.jpg)
Mental Magic. Surefire Tricks to Amaze Your Friends
Martin Gardner, 2012![Mind-Boggling Word Puzzles](http://cdn.ketabkoo.com/covers/2/253959-n.jpg)
Mind-Boggling Word Puzzles
Martin Gardner, 2012![My Best Mathematical and Logic Puzzles](http://cdn.ketabkoo.com/covers/2/253961-n.jpg)
My Best Mathematical and Logic Puzzles
Martin Gardner, 1994![New mathematical diversions](http://cdn.ketabkoo.com/covers/2/253962-n.jpg)
New mathematical diversions
Martin Gardner, 1995![On the Wild Side](http://cdn.ketabkoo.com/covers/2/253966-n.jpg)
On the Wild Side
Martin Gardner, 1992![Order and Surprise](http://cdn.ketabkoo.com/covers/2/253967-n.jpg)
Order and Surprise
Martin Gardner, 1983![Order and Surprise](http://cdn.ketabkoo.com/covers/2/253968-n.jpg)
Order and Surprise
Martin Gardner, 1983![Order and surprise](http://cdn.ketabkoo.com/covers/2/253969-n.jpg)
Order and surprise
Martin Gardner, 1983![Penrose Tiles to Trapdoor Ciphers](http://cdn.ketabkoo.com/covers/2/253971-n.jpg)