Title rated 3.75 out of 5 stars, based on 29 ratings(29 ratings)
Book, 2009
Current format, Book, 2009, 1st ed, No Longer Available.
Book, 2009
Current format, Book, 2009, 1st ed, No Longer Available. Offered in 0 more formats
Provides an overview of various types of codes that were used throughout history to send secret messages, including those used by Spartan warriors, Elizabeth I, Navajo Code talkers, and Cold War spies.
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