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3. Stratigraphic palaeontology in the Philippines;Amato;Philippine Geologist,1965
4. Ausa, C. et al. In press. Geology of the Pujada Penisula, Mindanao. In: Philippine Bureau of Mines and Geo-Sciences 1984 Annual National Geological Seminar, January 1984.
5. Tectonic scenarios of the Philippines and northern Indonesia region;Balce,1979