Merttens,Ruth <br/><br/>
Textbook 2 

 - Karachi:  Pearson Education Limited,  2007. 
 - 32 pages:  illustrations;  28 cm. 
<br/><br/><label>ISBN: </label>9780602575090 
<br/><br/><label>Dewey Class. No.: </label>TR-510  / MER-T