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DENR Secretary Reyes stops Biak-na-Bato marble quarrying.
Опубликовано в: Manila Bulletin (2006)Статья -
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Secretary alvarez takes action against tea rose marble smugglers
Опубликовано в: Manila Times (2001)Статья -
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Marble Corporation of the Philippines a production and operations management study
Опубликовано 1999Диссертация -
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