Manual for economics with work exercises / 
Silon, Elsa T.; Bernardo; Ramon A.; Quilloy, Melani C. 
 - 1st ed. 
 - Manila :  Rex Book Store,  2009. 
 - viii,117p.; 25cm. 
<br/><br/>Includes references 
<br/><br/><label>ISBN: </label>9789712353208 
<br/><br/><label>Dewey Class. No.: </label>Fil 350 Si585 2009