Farmers' knowledge and perception of improved technology a study of five farming systems
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| Outros Autores: | , |
| Formato: | Livro |
| Idioma: | English |
| Publicado em: |
Colombo
Agrarian Research and Training Institute
1980.
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| Colecção: | Research study / Agrarian Research and Training Institute
no. 34 |
| Assuntos: |