"Downes, L.W" <br/><br/>
Countdown Level 3 Maths 

 - India  Edinburgh Oliver & Boyd 1985,Oxford University Press  1998 
 - 168 
<br/><br/><label>ISBN: </label>0195774396 
<br/><br/><label>Dewey Class. No.: </label>510  / 1064-T