The codebreakers
Portuguese language
Cryptography
Business writing
Long Now Manual for Civilization
Grammar
BUSINESS & ECONOMICS
English language
General
History
David Kahn's book is probably the best known and most thorough history of codes and ciphers, cryptography, and cryptanalysis ever written. It covers the development and use of secret writing from ancient times up to the present day. A must read for anyone who is interested in this fascinating fiel…
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