Não informado. (2008). Forestry Bulletin. Duke University, School of Forestry.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Forestry Bulletin. Durham, NC: Duke University, School of Forestry, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Forestry Bulletin. Duke University, School of Forestry, 2008.
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