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Eradication of the Sweet-potato Weevil in Florida

Dan HansenEugene MerrittGeorge Thomas RatliffeHarry Vanghn HarlanJohn Enos GrafOrator Fuller CookTyōzaburō TanakaWilfred Wickes Ballard

其他書名	A Report of Progress
出版	U.S. Department of Agriculture, 1921
URL	http://books.google.com.hk/books?id=tTFMAQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN