General description and operation of the agro-environmental system : crop management modeling /
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| Main Author: | |
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| Other Authors: | |
| Format: | Book |
| Language: | English |
| Published: |
Blacksburg, Va. :
Virginia Polytechnic Institute and State University, and Wallops Flight Center,
[1981].
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| Physical Description: | 34 leaves : ill. |
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