Introduces ten encoding methods using numbers, rearranged letters, colored squares and dots, and other systems. Provides a message to decipher with each method.
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Introduces ten encoding methods using numbers, rearranged letters, colored squares and dots, and other systems. Provides a message to decipher with each method.
Read Less
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Seller's Description:
Very Good in Very Good jacket. First edition. 32pp. Illustrated by Rothman and Tremain. Endpapers and boards foxed, very good in a price-clipped very good dustwrapper with light soiling and tears.