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Title: Logical Labyrinths / Edition 1, Author: Raymond Smullyan
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Logical Labyrinths / Edition 1
by Raymond Smullyan
Hardcover $140.00
Title: The Cryptoclub: Using Mathematics to Make and Break Secret Codes / Edition 1, Author: Janet Beissinger
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The Cryptoclub: Using…
by Janet Beissinger, Vera Pless
Paperback $61.99
Title: Geometric Puzzle Design / Edition 1, Author: Stewart Coffin
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Geometric Puzzle Design /…
by Stewart Coffin
Paperback $61.99