Velasco, M. M. EDC, PGPC submit bids for geothermal blocks. IN Business. Manila Bulletin.
Chicago-viite (17. p.)Velasco, Myrna M. "EDC, PGPC Submit Bids for Geothermal Blocks. IN Business." Manila Bulletin .
MLA-viite (9. p.)Velasco, Myrna M. "EDC, PGPC Submit Bids for Geothermal Blocks. IN Business." Manila Bulletin, .
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