Solutions to O-level classified mathematics step-by-step answers to unit 1A-13 according to "O-level classified mathematics lastest examination papers / 
The Editorial Board 
 - New ed. 
 - Singapore :  The Publications,  2004 
 - 1 v. (various pagings) :  ill. 
<br/><br/><label>ISBN: </label>9812551344 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATHEMATICS--PROBLEMS, EXERCISES, ETC.
<br/><br/><label>LC Class. No.: </label>QA43  / S648 2004