Case, Karl E. <br/><br/>
Principles of economics / 
Karl E. Case, Ray C. Fair , Sharon M. Oster. 
 - Ninth Edition. 
 - Singapore :  Pearson,  2009. 
 - 811 p. :  ill. ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9789810697280 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.