00337nam a22001097a 450000500170000000800410001704000210005805000200007910000550009924500330015426000400018720230403083159.0230403b        |||||||| |||| 00| 0 eng d  6CLRCaCLRCcCLRC  aQE 552bP5 1991  aPhilippine Institute of Volcanology and Seismology  aVolcanoes of the philippines  aQuezon City bPHILVOLCS Pressc1991