Penrose Tiles To Trapdoor Ciphers By Martin Gardner. Vintage 1989 Fractal Mathematical Games. Retrurn Of Dr. Matrix.

$10.80 $12.00

Penrose Tiles To Trapdoor Ciphers
By Martin Gardner
1989 Vintage Softcover
Former library copy has a sticker on the side and has a square cut out of the front cover. otherwise in very nice shape.

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