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總筆數:2
| 篇名 | 作者 | 刊名 | 出版年 | 查看 |
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| Efficiency of research investments in the presence of internationalspillovers: wheat research in developing countries |
Maredia, M.K.;Byerlee, D.; |
Agricultural Economics |
2000-01-01 |
查看 |
| Attribution and other problems in assessing the returns to agricultural R&D |
Alston, J.M.;Pardey, P.G.; |
Agricultural Economics |
2001-09-01 |
查看 |
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