"R. Merttens" <br/><br/>
Abacus Evolve 3 

 - Karachi-Pakistan  Ginn An imprint of Pearson Education Limited  2007 
 - 80 
<br/><br/><label>ISBN: </label>9780602575144 
<br/><br/><label>Dewey Class. No.: </label>510  / 1379