Permanent agriculture, a textbook of general agriculture
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| Other Authors: | |
| Format: | Book | 
| Language: | English | 
| Published: | 
        New York
          J. Wiley & sons
    
        1941.
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| Series: | The Wiley farm seried, ed. by A. K. Getman and C. E. Ladd
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| Subjects: |