U.P. handbook ng kahandaan sa kalamidad.
U.P. handbook ng kahandaan sa kalamidad.
- 159 pages : illustrations, map 21 cm.
'Bulkan at Lindol" --COVER.
Natural disasters
GB 5014 / .Un38 1991
'Bulkan at Lindol" --COVER.
Natural disasters
GB 5014 / .Un38 1991