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pages missing : 9 Phrasen in 5 Thematiken |
| Bibliothekswesen | 2 |
| Informationstechnik | 3 |
| Landwirtschaft | 1 |
| Technik | 1 |
| Telekommunikation | 2 |
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| 缺页; 脱页 | |||
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pages missing : 9 Phrasen in 5 Thematiken |
| Bibliothekswesen | 2 |
| Informationstechnik | 3 |
| Landwirtschaft | 1 |
| Technik | 1 |
| Telekommunikation | 2 |