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Coded information may look confusing, but most codes provide hints that can help you break them. Learn how to find and interpret code patterns and repetitions.
Throughout history, army generals, spies, and even scientists have guarded information through secret codes. Find out how they did it and learn how to create ...
From secret treasure maps to Navajo code talkers to Cockney rhyming slang, these books cover the ins and outs of historic and modern-day codes. This set ...
From hospital and police codes to Cockney slang, spoken codes can be both helpful and entertaining. Learn the history behind some of today’s most useful and ...
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