search query: @author Yu, Tongshen / total: 1
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| title | year | author | ||
| 1. |
Journal of People's University of China (c)
1999 : 6, p.49 |
1999 | Yu, Tongshen |
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| title | year | author | ||
| 1. |
Journal of People's University of China (c)
1999 : 6, p.49 |
1999 | Yu, Tongshen |