Não informado. Publications of the Earth Physics Branch. Department of Energy, Mines and Resources.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Publications of the Earth Physics Branch. Ottawa: Department of Energy, Mines and Resources.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Publications of the Earth Physics Branch. Department of Energy, Mines and Resources.
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