Washability characteristics of some Philippine coals / Telesforo A. Ejercito and Helen R. Lewis.
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| Format: | Buch |
| Sprache: | Philippinen-Austronesisch |
| Veröffentlicht: |
Manila
[Bureau of Mines]
c1967.
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| Schriftenreihe: | Philippines, Republic. Bureau of Mines. Report of investigations; No. 64.
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