premaratne, K.P.K. Devi, Sri. <br/><br/>
Secondary Mathematics :  Book -11 

 - 1st, ed 
 - Srilanka :  International Book House Private,  2004. 
 - 216 p. 
<br/><br/><label>ISBN: </label>9558975052 
<br/><br/><label>Dewey Class. No.: </label>510.76  / pre