How to improve your mathematics /  
Andrew Er.   
 - Singapore :   Educational Publishing house pte Ltd,   c2013.   
 - 198p.:ill.;26cm   
<br/><br/><label>ISBN: </label>9789814403870   
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>TR 510.7 Er1 2013