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Cotton-spacing Experiments at Greenville, Tex

Homer Charles McNamara

出版	U.S. Department of Agriculture, 1927
URL	http://books.google.com.hk/books?id=sHnGQGft7oIC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

Of yields from spacing experiments. pp. 39.