Ramos, H. C. (1999). The national mineral policy: Promoting sustainability through responsible mining. Journal on Environment, Energy and Minerals.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRamos, Horacio C. "The National Mineral Policy: Promoting Sustainability Through Responsible Mining." Journal on Environment, Energy and Minerals 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRamos, Horacio C. "The National Mineral Policy: Promoting Sustainability Through Responsible Mining." Journal on Environment, Energy and Minerals, 1999.
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