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Google圖書搜尋
How Serious are the Defects of Mechanical Blocking of Sugar Beets
Don Warren Pittman
其他書名
A Study of the Defects of Mechanical Blocking and of Means of Predicting the Results in Each Case
出版
Agricultural Experiment Station, Utah State Agricultural College
, 1951
URL
http://books.google.com.hk/books?id=5vq4mvTHkYYC&hl=&source=gbs_api