ciphers Books
41 books in this genre
Operation Trinity
Clifford Riley
The hunt for the missing spy
Penny Warner
Maguire's code of ciphers
Charles H. J. Maguire
The Beale treasure
Peter Viemeister
Codemaster
Hamilton Nickels
Basic field manual
United States. Army. Signal Corps
Uncracked Codes and Cyphers
Ann Byers
The Mathematics of Secrets
Joshua Holden
Codes and ciphers
Way, Peter.
Commonwealth of Massachusetts state building code
The chaos code
Justin Richards
Cryptology
Albrecht Beutelspacher
Codes, Ciphers, Secrets and Cryptic Communication
Fred B. Wrixon
Hieroglyphs for fun
Henry Joseph Scott
Ciphers and codes
Karen Price Hossell
La cryptographie devoilée: ou, Art de traduire ou de déchiffrer toutes les écritures en quelque ...
Charles Franc̦ois Vesin
Cryptology yesterday, today, and tomorrow
Cipher A. Deavours
Military Cryptanalysis, Part IV
William F. Friedman
Ciphers for the little folks
Dorothy Crain
The secret of the skeleton key
Penny Warner