Lipsey, Richard G. <br/><br/>
An Introduction to Positive Economics: 

 - 6th ed. 
 - London.  Weidenfeld and Nicolson.  1986. 
 - xix, 790p.: 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0297782665 
<br/><br/><label>LC Class. No.: </label>HB171.5lip.