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Google圖書搜尋
Agricultural Characteristics and Fertilizer Practices in the Cache La Poudre-South Platte Irrigation Area of Northeastern Colorado
Clarence Floyd Davan
出版
Colorado Experiment Station, Colorado Agricultural College
, 1932
URL
http://books.google.com.hk/books?id=2wdKAQAAMAAJ&hl=&source=gbs_api