Burton, S.W.  <br/><br/>
Focus Mathematics ( Book-5) 
/ by S.W. Burton, A.C. Nicholls  
 - Oxford:   Pergamon Press;   1975.  
 - 189p.  
<br/><br/><label>ISBN: </label>0080167314  
<br/><br/><label>Dewey Class. No.: </label>510   / BUR/F