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Content of Chemical Elements in Tree Rings of Lodgepole Pine and Whitebark Pine from a Subalpine Sierra Nevada Forest

David Lawrence Peterson

出版	U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1990
URL	http://books.google.com.hk/books?id=wOWa7-iws_sC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN