Não informado. (2010). The School of Mines Quarterly. Columbia University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The School of Mines Quarterly. New York: Columbia University, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The School of Mines Quarterly. Columbia University, 2010.
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