- bibliographic retrieval services
- 文献检索: document retrieval; literatu ...
- 服务: give service to; be in the s ...
- 医学文献检索服务: medical literature retrieval service
- 检索服务文献: literature about search services
- 文献检索: bibliographic retrieval; bibliographic search; consulting method of scientific and technical literature; document indexing; document retrieval; documentation retrieval; literature retrieval; literature search
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