Secret writing--codes and messages / by Eugene Baker ; illustrated by Lois Axeman.
by Baker, Eugene.
Material type:
BookSeries: The Junior detective series. Publisher: Elgin, Ill. : Child's World, 1980Description: 32 p. : ill.ISBN: 0895651505 :.Subject(s): Cryptography | CiphersDDC classification: 001.54 Summary: Discusses a variety of codes and explains how to send and decode messages.
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Discusses a variety of codes and explains how to send and decode messages.
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