search query: @author Yang, Qiquan / total: 1
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| title | year | author | ||
| 1. |
Economy and Information (c)
1999 : 5, p.18-19 |
1999 | Yang, Qiquan |
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| title | year | author | ||
| 1. |
Economy and Information (c)
1999 : 5, p.18-19 |
1999 | Yang, Qiquan |