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Farm Management Extension

Clyde Evert LeightyErnest Marion StoddardEugene MerrittHarrison Morton DixonHoward Ross TolleyPeter A. YoderThomas Roscoe ChamberlinWalter Cochran DavisWilliam Allison Lloyd

其他書名	Early Development, and Status in 1922
出版	U.S. Department of Agriculture, 1923
URL	http://books.google.com.hk/books?id=6niQAQAACAAJ&hl=&source=gbs_api