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Effects of Partial Defoliation at Transplanting Time on Subsequent Growth and Yield of Lettuce, Cauliflower, Celery, Peppers, and Onions

James Ellsworth Kraus

出版	U.S. Department of Agriculture, 1942
URL	http://books.google.com.hk/books?id=hkBa8Wt8HAQC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN