NCERT <br/><br/>
Economics   :Textbook for Class IX / 
NCERT 
 - New Delhi  :NCERT,  2006 
 - iv,54p. 
<br/><br/><label>ISBN: </label>81-7450-517-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Economics -textbook-class 9th
<br/><br/><label>Dewey Class. No.: </label>330 N213E