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Codes and sequences
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Codes and sequences
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6 Total copies, 6 Copies are in, 0 Copies are out.
Provides an introduction to cryptography and ciphers, and explains how to encode and decode.
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Authors
Smoothey, Marion, 1943-
Subjects
Cryptography.
Ciphers.
Language
English
Series
Let's investigate
Dimensions
26 cm.