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Geology and geochemistry of the nickeliferous laterites of Nonoc and adjacent islands, Surigao province, Philippines / by Luis Santos-Yñigo, Fernando B. Esguerra.
- 853
- Republic of the Philippines. Department of agriculture and natural resources. Bureau of mines,
- 1961.
- Manila :
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Bibliography on Philippine geology, mining and mineral resources, 1953-1965 / Begigna T. Aquino and Leticia G. Santos.
- 853
- Republic of the Philippines. Department of agriculture and natural resources. Bureau of mines,
- 1971.
- Manila :