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Soil and water conservation for productivity and environmental protection
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主要作者: | Troeh, Frederick R. |
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其他作者: | Donahue, Roy L., Hobbs, J. Arthur (James Arthur), 1914- |
格式: | 圖書 |
語言: | 英语 |
出版: |
Englewood Cliffs, N.J.
Prentice-Hall
c1980
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