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| explanatory notes; apparatus; prelims | |||
| reference matter (книги) | |||
| reference tools; reference aids (к патентному фонду) | |||
| справочный аппарат: 19 phrases in 7 subjects |
| Advertising | 1 |
| American usage, not spelling | 2 |
| Automated equipment | 2 |
| General | 1 |
| Librarianship | 7 |
| Patents | 4 |
| Polygraphy | 2 |