search query: @author He, Youhua / total: 1
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| title | year | author | ||
| 1. |
Intertrade (c)
1999 : 6, p.45-47 |
1999 | He, Youhua |
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| title | year | author | ||
| 1. |
Intertrade (c)
1999 : 6, p.45-47 |
1999 | He, Youhua |