Cloquet Forest Research Center. (1960). Annual summary. The Center.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCloquet Forest Research Center. Annual Summary. Cloquet, Minn.: The Center, 1960.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCloquet Forest Research Center. Annual Summary. The Center, 1960.
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