search query: @author Yi, Guoqin / total: 1
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| title | year | author | ||
| 1. |
Economy and Information (c)
1999 : 1, p.38-42 |
1999 | Yi, Guoqin |
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| title | year | author | ||
| 1. |
Economy and Information (c)
1999 : 1, p.38-42 |
1999 | Yi, Guoqin |