Não informado. (1978). Fuel and Energy Abstracts. Institute of Energy Publication.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Fuel and Energy Abstracts. London: Institute of Energy Publication, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Fuel and Energy Abstracts. Institute of Energy Publication, 1978.
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