Não informado. (1935). Petroleum technology. Institution of Petroleum Technologists.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Petroleum Technology. London: Institution of Petroleum Technologists, 1935.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Petroleum Technology. Institution of Petroleum Technologists, 1935.
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