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Google圖書搜尋
The Significance of the Discolorations in Yellow-poplar Veneers
George H. Hefting
出版
U.S. Department of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, Division of Forest Pathology
, 1952
URL
http://books.google.com.hk/books?id=5pXjzgEACAAJ&hl=&source=gbs_api