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Dyfyniad Arddull ChicagoRoxas, Patrick. "P20-B Road Project to Link Ecozones in Central Luzon." Manila Times 2003.
Dyfyniad MLARoxas, Patrick. "P20-B Road Project to Link Ecozones in Central Luzon." Manila Times, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.