search query: @author Yan, Wengyuang / total: 1
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| title | year | author | ||
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Economics Information (c)
1994 : 5, p.34-36 |
1994 | Yan, Wengyuang |
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| title | year | author | ||
| 1. |
Economics Information (c)
1994 : 5, p.34-36 |
1994 | Yan, Wengyuang |