Bilaketaren emaitzak - "Petroleum Prospecting"
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Lack of major oil finds puts off big prospects [series]. IN Special report [column]
Argitaratua izan da Philippine Daily Inquirer (1997)Artikulua -
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Govt plans to offer 38 exploration contracts
Argitaratua izan da Philippine Daily Inquirer (2009)Artikulua -
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RP, China, Vietnam to bid out contract for energy exploration
Argitaratua izan da Manila Bulletin (2005)Artikulua -
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9 foreign firms want to join local oil exploration / Gil C.. Cabacungan Jr.
Argitaratua izan da Manila Chronicle (1992)Artikulua -
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Foreign companies renew search for oil here / Gil C. Cabacungan Jr.
Argitaratua izan da Manila Chronicle (1992)Artikulua