The kids' code and cipher book

Presents a variety of codes and ciphers and includes messages to encode and decode, as part of a story.

Linnet Books
1991
9780208023414
book

Holdings

hidmidmiidnidwidlocation_codelocationbarcodecallnumdeweycreatedupdated
404038372784052435418518446695CCCR135CCCR007183652.8 GAR652.817425694091742569409