Hawking, Lucy <br/><br/>
George And The Unbreakable Code (Lead Title)  / 
Hawking, Lucy,Hawking, Stephen 
 -  Penguin ,  2015 
 - 352 
<br/><br/><label>ISBN: </label>9780552570053 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Childrens
<br/><br/><label>Dewey Class. No.: </label>823.92  / HAW