Heilbroner, Robert L. <br/><br/>
Understanding microeconomics 

 - 9th ed. 
 - New Jersey  Prentice Hall  1990 
 - 449 p 
<br/><br/><label>ISBN: </label>0-13-933367-3 
<br/><br/><label>LC Class. No.: </label>HB 172 .H45/