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Agricultural Outlook for Illinois

Benjamin KoehlerHerbert Windsor MumfordLacey Fletcher RickeyLeslie Edwin SawyerRobert GrahamRobert R. HudelsonRoland Willey BartlettWilliam Arthur JamesFrank ThorpJames Ransom Holbert

其他書名	1931
出版	University of Illinois College of Agriculture and Agricultural Experiment Station, 1930
URL	http://books.google.com.hk/books?id=jrpQAQAAMAAJ&hl=&source=gbs_api