 |
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| распор арки; сечение арки | |||
|
arch section : 5 phrases, 4 sujets |
| Construction | 1 |
| Exploitation minière | 2 |
| Hydrologie | 1 |
| Technologie | 1 |
|
| |||
| распор арки; сечение арки | |||
|
arch section : 5 phrases, 4 sujets |
| Construction | 1 |
| Exploitation minière | 2 |
| Hydrologie | 1 |
| Technologie | 1 |