THE EFFECTIVENESS OF PROMOTING PUERTO PRINCESA SUBTERRANEAN UNDERGROUND RIVER AS ONE OF THE NEW SEVEN WONDERS OF NATURE THROUGH FREQUENTLY USED SOCIAL MEDIA - Mantolino, Martin Antonio. 4 0 16; 5 (2013)
Thesis (Undergradaute) Pamantasan ng Lungsod ng Maynila 2013.;College of Tourism Hotel and Travel Industry Management.
Keywords: 2 -- 0; 6; 20; 20; 2