"R. Merttens" <br/><br/>
Abacus Evolve Textbook 1 

 - UK  Ginn An imprint of Pearson Education Limited  2007 
 - 80 
<br/><br/><label>ISBN: </label>9780602575724 
<br/><br/><label>Dewey Class. No.: </label>510  / 1395