Danger in Zion National Park:...
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Where's Waldo? the Boredom...
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The Maze of Bones
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Addison Cooke and the...
Jonathan W Stokes
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Big Nate Boredom Buster
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En Busca de la Entrada...
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Cosmic Codes
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Codebreaking: A Practical...
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One False Note (the 39 Clues,...
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The Doomsday Key: A SIGMA...
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Create Your Own Secret...
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The Last Twelve Miles
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King & Kayla and the Case of...
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Top Secret: A Handbook of...
Paul B Janeczko (Editor),
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The Brightwood Code
Monica Hesse
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How I Became a Spy: A Mystery...
Deborah Hopkinson
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Unbreakable: The Spies Who...
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The Unbreakable Code
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Secret Coders
Gene Luen Yang,
Mike Holmes (Illustrator)
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Explorer Academy: The...
Trudi Trueit
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Explorer Academy: The Double...
Trudi Trueit
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The Emperor's Code
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Cryptanalysis : a study of...
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