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| 理论〔书本〕的研究; 书籍印刷〔保管〕; 文书工作 | |||
| book-work: 9 phrases in 7 subjects |
| Agriculture | 1 |
| Economy | 2 |
| General | 2 |
| Labor law | 1 |
| Librarianship | 1 |
| Polygraphy | 1 |
| Technology | 1 |
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