Crop rotation and cultural methods at the Akron (Colorado) Field Station in the 15-year period from 1909 to 1923, inclusive /
And recommendations. pp. 26.
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
Washington, D.C. :
U.S. Dept. of Agriculture,
1925.
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| 丛编: | Department bulletin (United States. Department of Agriculture) ;
no. 1304. |
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