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| плоская система | |||
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système plan : 26 phrases in 9 subjects |
| Construction | 9 |
| Hydraulic engineering | 1 |
| Mechanic engineering | 2 |
| Metallurgy | 1 |
| Military | 1 |
| Name of organization | 2 |
| Polygraphy | 2 |
| Technology | 7 |
| United Nations | 1 |
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