Cowen,Tyler and Tabrrok,Alex, <br/><br/>
Modern Principles: Economics 
By Tyler Cowen and Alex Tabarrok 
 - America  Worth publishers  2010 
 - xlvi;725p. 
<br/><br/><label>ISBN: </label>978-1-4292-0227-5 
<br/><br/><label>Dewey Class. No.: </label>X  / Q0