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Cotton Gin Operating Costs in West Texas, the Lower Rio Grande Valley, and the Blacklands of Texas, 1973 Season

出版	U.S. Department of Agriculture, Economic Research Service, 1975
URL	http://books.google.com.hk/books?id=9nU-AAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN