Codes: how to make them and break them

Poskitt, Kjartan

Ian Baker

Series: Murderous maths
Notes
This volume contains tips on how to crack substition codes, message systems such as Morse and the secrets of ENIGMA are revealed. 160p.

Location edition Bar Code due date
Non-fiction B011607
Dewey:652.8
ISBN:9780439943284
pub:2007