LIPSEY RICHARD G.  CHRYSTAL K. ALEC <br/><br/>
PRINCIPLES OF ECONOMICS 

 - 9th ED. 
 - OXFORD:  OXFORD UNIVERSITY PRESS,  1999. 
<br/><br/><label>ISBN: </label>0198775881. 
<br/><br/><label>Dewey Class. No.: </label>330.1 LIP