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

 - 5th Ed. 
 - London :  English Language Book Society and Weidenfeld And Nicolson,  1969. 
 - xxiii, 874 p. 
<br/><br/><label>ISBN: </label>297764632 
<br/><br/><label>Dewey Class. No.: </label>330.1  / LIP