Lipsey Richard G <br/><br/>
Introduction to positive economics 
Lipsey Richard G; Chrystal K Alec 
 - 8 
 - New Delhi  New Delhi, Oxford University  1995 
 - xxiv,919 
<br/><br/><label>ISBN: </label>0-19-44254-5 
<br/><br/><label>Source: </label>Textbook