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1961
An act creating a people's small-scale mining program and for other purposes Republic Act no. 7076.
Julkaistu 1991Analytics -
1962
High taxes killing mining industry / Gil C. Cabacungan Jr.
Julkaisussa Manila Chronicle (1991)Artikkeli -
1963
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1964
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1965
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1966
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1967
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1968
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1969
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1970


