Não informado. (2003). NIPR Arctic Data Reports. National Institute of Polar Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. NIPR Arctic Data Reports. Tokyo: National Institute of Polar Research, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. NIPR Arctic Data Reports. National Institute of Polar Research, 2003.
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