Day, Roger. <br/><br/>
Mathematics/7: Concepts, Skills, and Problem Solving 

 - New york  MC Graw Hill  2008 
 - XXVIII, 791p.  Hard cover  28cm 
<br/><br/><label>ISBN: </label>9780078778506 
<br/><br/><label>Dewey Class. No.: </label>510