Secret warfare : the battle of codes and cyphers /

Bibliographic Details
Main Author:	Norman, Bruce
Format:	Book
Language:	English
Published:	Newton Abbot, Devon : David & Charles Publishers ; [1989]
Series:	David & Charles military book. Battle standards (Newton Abbot, England)
Subjects:	Cryptography > History. Military intelligence > History. Ciphers > History.

Evans: Library Stacks