Não informado. (1977). Mining Equipment International. Technical Publishing Corporation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Mining Equipment International. New York: Technical Publishing Corporation, 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Mining Equipment International. Technical Publishing Corporation, 1977.
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