The training and visit system of extension a paper based on experiences in the training and visit system of extension under the Kurunegala Rural Development Project
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
Colombo, Sri Lanka
Agrarian Research and Training Institute
1981.
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| 丛编: | Occasional publication / Agrarian Research & Training Institute
26. |
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