Preliminary geological reconnaissance of the Loboo mountains of Batangas province - Smith, Warren Du Pre 1880 (Manila Bureau of Print., 1906)
Available in microfilm at ISAIS Section see accession number (MCF-7885)
"Reprinted from the Philippine journal of science... vol. I, no. 6, July 15, 1906."
Cover title.
Keywords: Geology -- Batangas -- Loboo Mountains