Workshop on Philippine mineral resources presented before the Department of Natural Resources, Bureau of Mines, Philippine Plaza, 24 January 1977.
| مؤلف مشترك: | |
|---|---|
| التنسيق: | كتاب |
| اللغة: | English |
| منشور في: |
[S.l.
Population Resources
Environment and the Philippine Future, 1977]
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| الموضوعات: |