MANKIW,N. GREGORY <br/><br/>
Principles of Microeconomics 

 - 7th 
 - New Delhi  Cengage  2015 
 - p.495 
<br/><br/><label>ISBN: </label> RS 750.00 
<br/><br/><label>Dewey Class. No.: </label>338.5 M2P7