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Sampling, Grading and Cleaning Farmers' Stock Peanuts

N. M. PennyT. A. ElliotB. W. Carmichael

出版	University of Georgia College of Agriculture, Georgia Agricultural Experiment Stations, Georgia Institute of Technology, 1956
URL	http://books.google.com.hk/books?id=n1kTAQAAIAAJ&hl=&source=gbs_api