The 1987 constitution of the Philippines explained  

 - Manila :  Rex Book Store,  1989. 
 - xxi, 595 p.   22 cm. 
<br/><br/><label>ISBN: </label>971230101X  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Philippines--Constitutional law. 
<br/><br/><label>LC Class. No.: </label>KF5624.2  / T17 1989