Mercurio, Richmond <br/><br/>
NGCP upgrades North Luzon substations / 
by Richmond Mercurio. 
 - [S.l.] :  The Philippine Star,  April 21, 2023. 
<br/><br/>In:  The Philippine Star (April 21, 2023), column 1-6, page B7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric utilities.