Castillo, Andres Villegas, 1903- <br/><br/>
Principles of economics / 
Andres V. Castillo. 
 - Manila :  University Book Supply,  1970, c1966. 
 - xx, 704 p. 
<br/><br/> Includes references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philippines--Economic conditions