Ciphers

The Code Book: The Secret History of Codes and Code-breaking

Simon Singh

Code of honor

Alan Gratz

Mishneh Torah

mevoʾar ... ʻal yede S. Ravidovits

Mathematical Recreations and Essays

W. W. Rouse Ball, H. S. M. Coxeter

End of story

Peter Abrahams

The Mona Mousa Code

[ text by Geronimo Stilton ; illustrations by Matt Wolf].

The code book: how to make it, break it, hack it, or crack it

Simon Singh.

One False Note

Gordon Korman.

In Too Deep: Book Six

Jude Watson

Mathematical recreations and problems of past and present times.

By W.W. Rouse Ball ...