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bibliographic retrieval
| service
| bibliographic retrieval | |
| libr. | 书目检索 |
| service | |
| econ. | 署; 司; 服 务 |
| hydroel.st. | 供给 |
| interntl.trade. | 劳务 |
| met. | 维护; 设施 |
| |||
| 书目检索 | |||
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bibliographic retrieval service : 5 phrases in 3 subjects |
| Electronics | 2 |
| Information technology | 1 |
| Telecommunications | 2 |
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