Não informado. (1931). Geological Bulletin. Department of Conservation, Geological Survey.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Geological Bulletin. New Orleans, La: Department of Conservation, Geological Survey, 1931.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Geological Bulletin. Department of Conservation, Geological Survey, 1931.
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