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Weight and Nutrient Content of the Aboveground Parts of Some Loblolly Pines

出版	U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1965
URL	http://books.google.com.hk/books?id=kizGEEyGhR8C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN