Agro-information flow at the village level a survey of communication sources in the adoption process of high-yielding varieties of crops.
| 企业作者: | |
|---|---|
| 格式: | 图书 |
| 语言: | English |
| 出版: |
[New Delhi
s.n.]
1968.
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| 主题: |
| 企业作者: | |
|---|---|
| 格式: | 图书 |
| 语言: | English |
| 出版: |
[New Delhi
s.n.]
1968.
|
| 主题: |