Liang, Tan Thoo. <br/><br/>
Brain maths 
Tan Thoo Liang 
 - ed. 
 - [S.l.]  EPB Pan Pacific  2007 
 - 152 p. 
 - Brains math .
 - Brains math .
<br/><br/><label>ISBN: </label>9789812719720