search query: @author Zhang, Yang / total: 1
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| title | year | author | ||
| 1. |
Economy and Information (c)
1996 : 8, p.15-16 |
1996 | Zhang, Yang |
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| title | year | author | ||
| 1. |
Economy and Information (c)
1996 : 8, p.15-16 |
1996 | Zhang, Yang |