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Sugar Beet Investigations in Illinois

Cyril George HopkinsHerbert Windsor MumfordArchibald Dixon ShamelWilber John FraserLouie Henrie Smith

出版	University of Illinois Agricultural Experiment Station, 1905
URL	http://books.google.com.hk/books?id=nNVQAQAAMAAJ&hl=&source=gbs_api