Douglas, Nancy <br/><br/>
Reading Explorer 3 / 
Nancy Douglas. 
 - Boston, Massachusetts :  Heinle Cengage Learning,  2010. 
 - 192 p.:   col. ill.  28 cm. 
 - National Geographic .
<br/><br/> Includes index 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>978-1-4240-2935-8 
<br/><br/><label>LC Class. No.: </label>428.6 D74r