Economic impact of virus-free sweetpotato planting material in Shandong province, China.
| Autores principales: | , , , |
|---|---|
| Formato: | Libro |
| Lenguaje: | Inglés |
| Publicado: |
International Potato Center
1999
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/108750 |
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