Kimpton, Diana.

Totally cracking codes / Diana Kimpton ; illustrated by Mike Phillips. - London : Scholastic, 2010. - 1 v. : ill. ; 20 cm.

9781407114569 (pbk.) : £5.99 1407114565 (pbk.) : £5.99

GBB055955 bnb


Ciphers--Juvenile literature.
Cryptography--Juvenile literature.
Ciphers
Cryptography

652.8 / K567 2010 652.8 / K567 2010 652.8