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Google圖書搜尋
Effects of Alternative Wheat and Feed Grain Prices on Optimum Farm Plans and Income
Erwin O. Ullrich
其他書名
Beadle, Clark, Codington, Day, Marshall, and Roberts Counties
出版
Agricultural Experiment Station, South Dakota State University
, 1972
URL
http://books.google.com.hk/books?id=A3EpAQAAMAAJ&hl=&source=gbs_api