Medina, Roberto G. <br/><br/>
Principles of economics / 
Robert G. Medina. 
 - 1st ed. 
 - Manila :  Rex Book Store Inc,  2003. 
 - 286p. :  ill ;  22 cm. 
<br/><br/> Includes  index. 
<br/><br/><label>ISBN: </label>9712336107 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.