search query: @author Yan, Qing / total: 2
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| title | year | author | ||
| 2. |
International Economics and Trade Research (c)
1999 : 3, p.54-57 |
1999 | Yan, Qing |
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| title | year | author | ||
| 2. |
International Economics and Trade Research (c)
1999 : 3, p.54-57 |
1999 | Yan, Qing |