Philippine government 
Zaide, Gregorio F. 
 - revised edition. 
 -  National Book Store.  1987 
 - viii, 81 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71083878-4 
<br/><br/><label>Dewey Class. No.: </label>F 351 Za1p 1987