Bokdetaljer
Format
Pocketbok
Sidor
160
Språk
Engelska
Publicerad
Jan 1, 2010
Förlag
Scholastic
ISBN-10
1407114565
ISBN-13
9781407114569
Beskrivning
First the ancient Greeks hid messages under their hair. Then Mary Queen of Scots completely lost her head because of a cracked code. Now computers create codes no human can crack. This is the ultimate guide to unlocking the secret language of spies.