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4
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Faunal successions in Eastern Luzon Central valley / by Paz D. Santiago.
- 853
- Philippines. Department of agriculture and natural resources. Bureau of mines,
- 1970.
- Manila :
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Benefication of a complex lead-zinc-copper sulfide ore from Ayala district, Zamboanga / by Abelardo S. Malicsi and Gloria C. Magkawas.
- 853
- Philippines. Department of agriculture and natural resources. Bureau of mines,
- 1968.
- Manila :
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Hydrogeology of Central Luzon / by Mario P. Sandoval and Francisco B. Mamaril.
- 853
- Philippines. Department of agriculture and natural resources. Bureau of mines,
- 1970.
- Manila :
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Geological study of the effects of the August 1968 series of earthquakes / by Noe L. Caagusan.
- 853
- Philippines. Department of agriculture and natural resources. Bureau of mines,
- 1969.
- Manila :