by Eileen O'Brien (Author), D. Riddell (Author)
The Usborne Book of Secret Codes features al l kinds of codes and secret writing to learn, gadgets that y oung readers can make for coding and decoding messages and h ints on how to pass top secret information without it being intercepted '
Format: Illustrated
Pages: 32
Edition: illustrated edition
Publisher: Usborne Publishing Ltd
Published: 01 Mar 2000
ISBN 10: 0746023294
ISBN 13: 9780746023297
Children’s book age: 7-9 Years