Hawking, Lucy <br/><br/>
George and The Unbreakable Code (Lead Title) 
/ Hawking, Lucy 
 -  Penguin  2015 
 - 352 
<br/><br/><label>ISBN: </label>9780552570053 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children - All Subject Books (English & Tamil)
<br/><br/><label>Dewey Class. No.: </label>823.92  / HAW