From clothesline codes to surveillance satellites and cyber espionage, Janeczko uncovers two centuries' worth of true spy stories in U.S. history.
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handbook for the budding cryptographer including codes and ciphers, invisible inks, concealment techniques, spy stories and some history.
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A collection of lively rhymes and tricky tongue twisters, poems for more than one voice, bilingual poems -- from classic Shakespeare and Lear to anonymous rhymes to contemporary riffs on everything un...
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