"Seng, Teh Keng" <br/><br/>
New Syllabus  Mathematics  Work Book 1  (7th Ed.) 

 - Karachi  Oxford Universty Press  2018 
 - 219 
<br/><br/><label>ISBN: </label>9780199407446 
<br/><br/><label>Dewey Class. No.: </label>510  / T562