Codes, Ciphers and Secret Writing
BücherAngebote / Angebote:
Cipher and decipher codes: transposition and polyalphabetical ciphers, famous codes, typewriter and telephone codes, codes that use playing cards, knots, and swizzle sticks . . . even invisible writing and sending messages through space. 45 diagrams.
Folgt in ca. 15 Arbeitstagen
