Não informado. (2020). Mining Engineering. Society for Mining, Metallurgy and Exploration.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Mining Engineering. Littleton, Colo: Society for Mining, Metallurgy and Exploration, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Mining Engineering. Society for Mining, Metallurgy and Exploration, 2020.
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