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| предмет секретности (напр., информация, документы) | |||
| секретные материалы | |||
| English thesaurus | |||
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| Official information or matter in any form or of any nature which requires protection in the interests of national security. (FRA) | |||
| classified matter: 3 phrases in 2 subjects |
| Librarianship | 1 |
| Military | 2 |