Supplementary edition: Geology.

Notes on the geology and geography of the Baguio Mineral District, Volume II No. 4, August 1907 / by A.J. Eveland -- The essential features of the geology of the Philippine Islands, Volume 5 No. 5, November 1910 / by W.D. Smith -- The Philippine fault zone and its relation to Philippine structure, Vol. 74 No. 4, 1941 / by A.D. Alvir -- The relation of seismic disturbances in the Philippines to the geologic structure, Volume 8 No. 4, August 1913 / by M.S. Mazo and W.D. Smith -- Mayon volcano and its eruption, Volume no. 1, September 1929 / by L.A. Faustino -- Ore deposits of the Philippine Islands, Volume 8 No. 2, April 1913 / by F.T. Eddingfield -- A historical review of gold in the Philippines, Volume 92 No. 4, 1963 / by F.R. Tegengren -- The iron ores of the Bulacan province, Volume 9 No. 3, June 1914 / by F.A. Dalburg and W.E. Pratt -- Artesian water wells in Manila and neighboring municipalities, Volume 45 No. 2, 1931 / by R.H. Aguilar and L. Ocampo -- Geological reconnaissance of Northwestern Capiz province, Panay, Phil Islands, Vol. 45 No. 3, 1931 / by Q.A. Abadilla -- BPI advertisement

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