NCERT <br/><br/>
Mathematics  :Textbook for class IX / 
NCERT 
 - New Delhi  :NCERT,  2006 
 - iii,350p. 
<br/><br/><label>ISBN: </label>8174504893 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics-textbook-class 9th
<br/><br/><label>Dewey Class. No.: </label>510 N213M