Textbook on the Philippine constitution  / 
De Leon, Hector S.; De Leon Jr., Hector M. 
 - 17th ed. 
 - Manila :  Rex Book Store,  2019. 
 - liv,825p.; 22cm. 
<br/><br/>Includes ordinance 
<br/><br/><label>ISBN: </label>9789712392610 
<br/><br/><label>Dewey Class. No.: </label>Fil 342.599 D346 2019