Code book: The secret history of codes and code-breaking
Singh, Simon
Code book: The secret history of codes and code-breaking by Simon Singh - London Fourth estate 1999 - xiii, 402p.
9780007453085
652.8 / N99 (MA)
Code book: The secret history of codes and code-breaking by Simon Singh - London Fourth estate 1999 - xiii, 402p.
9780007453085
652.8 / N99 (MA)