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Google圖書搜尋
Relation of Leaf Area and Position to Quality of Fruit and to Bud Differentiation in Apples
Mark Hughlin Haller
John Robert Magness
出版
U.S. Department of Agriculture
, 1933
URL
http://books.google.com.hk/books?id=AdcxzgEACAAJ&hl=&source=gbs_api