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| circulars | |||
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| circular | |||
| circular | |||
| Zirkulare: 77 phrases in 15 subjects |
| Analytical chemistry | 1 |
| Communications | 6 |
| Electronics | 18 |
| Immigration and citizenship | 1 |
| Industry | 1 |
| Information technology | 4 |
| Marketing | 1 |
| Mathematics | 8 |
| Medical | 21 |
| Medical appliances | 2 |
| Microelectronics | 1 |
| Optics branch of physics | 2 |
| Physics | 3 |
| Statistics | 7 |
| Technology | 1 |