TY  - BOOK
AU  - Philippine Institute of Volcanology and Seismology
TI  - Operation Mayon: a contingency plan for Mayon Volcano
PY  - 1990///
CY  - Quezon City
PB  - PHIVOLCS Press
KW  - Mayon (Mount)
KW  - Volcanoes
KW  - Philippines
ER  -