Martin Oliver <br/><br/>
Agent Arthur's Desert Challenge 

<br/><br/> The stories of adventure and mystery in this series are interwoven with puzzles to solve. Extra clues as well as complete answers can be found at the back of each book. 
<br/><br/><label>ISBN: </label>9780746088241 
<br/><br/><label>Dewey Class. No.: </label>English OLI