Cowell, Cressida, <br/><br/>
Knock three times / 
 Knock 3 times 
written and illustrated by Cressida Cowell. 
 - 376 pages :  illustrations, map ;  22 cm. 
 - Wizards of once ;  bk. 3 .
<br/><br/> Xar and Wish are heroes with a huge task ahead--confronting the Nuckalavee is not for the faint hearted. But with Magic and Iron together, they might just have a chance of saving their beloved homes from those who seek to destroy everything they hold dear. 
<br/><br/> 6.6  3-6  X  Fountas 
<br/><br/><label>ISBN: </label>9780316508421 031650842X 
<br/><br/><label>LCCN: </label>2019947553 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wizards--Juvenile fiction.<br/>Witches--Juvenile fiction.<br/>Magic--Juvenile fiction.<br/>Wizards--Fiction.<br/>Witches--Fiction.<br/>Magic--Fiction.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Action and adventure fiction.
<br/><br/><label>Dewey Class. No.: </label>F COW