| |||
| 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 |