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Labor and Power Requirements by Size of Enterprise for Beef Cattle Systems in Eastern Kansas

Dale Alpheus KnightKansas Agricultural Experiment StationCharles Frederick Bortfeld

出版	Agricultural Experiment Station, Kansas State College of Agriculture and Applied Science, 1958
URL	http://books.google.com.hk/books?id=rUsTAQAAIAAJ&hl=&source=gbs_api