Codes, Ciphers & Other Cryptic & Clandestine Communications - Fred B. WrixonBlack Dog, 1998, Hardback in Dust Wrapper.
Condition: Near Fine - in Near Fine DJ. Top edges of DJ slightly ruffled otherwise a very well presented copy.
Learn the fascinating world of codes-from deciphering ancient hieroglyphics to cipher machines used in the world wars to computer cryptology for encoding financial transactions. 704pp. Index. Bibliography.