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Google圖書搜尋
A Method of Evaluating Forest Site Quality from Soil, Forest Cover, and Indicator Plants
Marinus Westveld
出版
Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture
, 1952
URL
http://books.google.com.hk/books?id=Ncl50AEACAAJ&hl=&source=gbs_api