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If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
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All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
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The Author'S Upbeat, Positive Tone Is Refreshing And His Enthusiasm About His Topic Is Contagious.' School Library Journal (Starred Review)Pssst! Do You Know The Difference Between A Code And A Cipher? Can You Tell A St. Cyr Slide From A Cardano Grille? Did You Know That The Discovery Of A Substitution Cipher Caused Mary Queen Of Scots To Lose Her Head? Dont Look Now, But Packed Into This Practical Field Guide Is Everything A Young Person Needs To Know About The Art Of Concealment Making And Breaking Codes, Mastering Cipher Systems, And Experimenting With Secret Writing. Offering Plenty Of Handson Practice Sessions, Tips For Creating A Codemaking Kit, Sidebars On Secret Codes In History, And An Amusing Pair Of Spies To Illustrate Techniques, Paul B. Janeczkos Tantalizing Top Secret Wont Stay A Secret For Long. Back Matter Includes Suggestions For Further Reading, An Authors Note, An Answer Key, And An Index.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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