01043cam a2200253 i 4500 623703270 TxAuBib 20080805120000.0 ||||||s2002||||||||||||||||||||||||und|u TXKPL eng rda TXKPL TxAuBib rda Adams, Simon, 1955- Descifradores De Codigos/ De Los Jeroglificos a Los Hacker : Code Breakers: From Hieroghyps to hackers. Miami Fl : Planta Junior, 2002. 96 pages : web sites information ; 20cm. txt rdacontent n rdamedia nc rdacarrier Megabites, Planeta Junior provides the history behind codes and ciphers as used in spying, other types of secrets that can be thought of as codes, and explain how readers can make and use their own secret codes. 20080805. Ciphers Cryptography. Megabites, Planeta Junior. TXKPL