Books
2 results found| Title | Authors | Description | OpenBook ID | |
|---|---|---|---|---|
|
I spy | Diana Noonan | The first story tells how spies hide secret messages. The second story tells how secret messages could be sent to a friend. | OL2852955W |
|
Break that code | Sharon Dalgleish,Lisa Thompson | Learn how codes have been used since ancient times, and how to use your skills to break some codes. | OL28760090W |