Não informado. (1971). Canadian Journal of Forest Research. National Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Journal of Forest Research. Ottawa: National Research Council, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Journal of Forest Research. National Research Council, 1971.
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