Napocor energizes 41-km Calapan-Galera power line. The Philippine Star.
Chicagoスタイル(17版)引用形式"Napocor Energizes 41-km Calapan-Galera Power Line." The Philippine Star .
MLA(9版)引用形式"Napocor Energizes 41-km Calapan-Galera Power Line." The Philippine Star, .
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