Duncan <br/><br/>
Modern School Mathematics structure and use 
Ernest R.Duncan 
 - 1 
 - New York	 				  Houghton Mifflin company  1972 
 - 444+ 
<br/><br/><label>ISBN: </label>0395133645			 
<br/><br/><label>Dewey Class. No.: </label>510  / MOD