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| здоровая структура | |||
| здоровая структура (металла) | |||
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sound structure : 12 phrases in 8 subjects |
| Acoustics | 1 |
| Architecture | 2 |
| Aviation | 1 |
| Construction | 2 |
| Natural resourses and wildlife conservation | 3 |
| Occupational health & safety | 1 |
| Programming | 1 |
| Technology | 1 |