Chopra P N <br/><br/>
Principles of economics 
Chopra P N 
 - 2 
 - New Delhi   Kalyani Publishers          1979 
 - 655p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic Theory
<br/><br/><label>Dewey Class. No.: </label>X, L9