Douglas, Nancy <br/><br/>
Reading explorer 1 / 
Nancy Douglas. 
 - Boston, Massachusetts :  Heinle Cengage Learning,  2009. 
 - 160 p.:   col. ill.  28 cm. 
 - National Geographic .
<br/><br/> Includes index 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>978-1-4240-2933-4 
<br/><br/><label>LC Class. No.: </label>428.6 D74r 2009 bk.1