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Operating Grain Aeration Systems in the Southwest

Reed Smoot HutchisonEmil F. Willms

出版	Transportation and Facilities Research Division, Agricultural Marketing Service, U.S. Department of Agriculture, 1962
URL	http://books.google.com.hk/books?id=-sw8AAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN