Economic impact of virus-free sweetpotato planting material in Shandong province, China.
| Main Authors: | , , , |
|---|---|
| Format: | Libro |
| Language: | Inglés |
| Published: |
International Potato Center
1999
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/108750 |
| Description not available. |