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Google圖書搜尋
Effect of Atrazine, Fertilizer, and 2,4-D on Winter Grazing Preferences of Beef Cows on Northcentral Oklahoma Tallgrass Prairie
R. L. Baker
出版
1982
URL
http://books.google.com.hk/books?id=CItANwAACAAJ&hl=&source=gbs_api