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Natural Regeneration 10 Years After a Douglas-fir Tussock Moth Outbreak in Northeastern Oregon

出版	U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1986
URL	http://books.google.com.hk/books?id=Pm7Lb8k_Q_QC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN