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Google圖書搜尋
Empirical Yield Tables for Spruce-fir Cut-over Lands in the Northeast
Marinus Westveld
出版
Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture
, 1953
URL
http://books.google.com.hk/books?id=-WvntgAACAAJ&hl=&source=gbs_api