00000ctm a22000003a 4500 UP-99796217609243598 Buklod 20100415112336.0 a r |||| u| ta 100415s xx d r |||| u| (iLib)UPD-00130999471 DAIT eng LG 993.5 2004 T6 C36 Cansino, Abegale B. The impacts of problems in managing and promoting cave destinations in assessing the state of spelunking in the Philippines a case study of Biak-Na-Bato National Park in Bulacan by Abegale B. Cansino. 2004 7, 45 leaves Thesis (BS Tourism - - University of the Philippines, Diliman) Caves Philippines. Biak-Na-Bato Natiponal Park (Bulacan). UPIANA UPD DAIT LG 993.5 2004 T6 C36 Thesis