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Google圖書搜尋
The Effects of Partial Defoliation at Transplanting Time on Subsequent Growth and Yield of Certain Vegetable Crop Plants
James Ellsworth Kraus
出版
Cornell Univ.
, 1940
URL
http://books.google.com.hk/books?id=U1FCAAAAYAAJ&hl=&source=gbs_api