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Google圖書搜尋
The Productiveness of Successive Generations of Self-fertilized Lines of Corn and of Crosses Between Them
Frederick David Richey
Ludwig Stolz Mayer
出版
U.S. Department of Agriculture
, 1925
URL
http://books.google.com.hk/books?id=Bf1iAQAACAAJ&hl=&source=gbs_api
