Chipongian, L. C. (2004). Biomass potentials great but funding remains a constraint. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChipongian, Lee C. "Biomass Potentials Great but Funding Remains a Constraint." Manila Bulletin 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रChipongian, Lee C. "Biomass Potentials Great but Funding Remains a Constraint." Manila Bulletin, 2004.
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