 |
| |||
| mining deep mine; deep mining; underground mining | |||
|
exploitation souterraine : 13 a las frases, 5 temas |
| Ambiente | 2 |
| Carbón | 4 |
| Ciencias de la vida | 1 |
| Construcción | 2 |
| Metalurgia | 4 |
|
| |||
| mining deep mine; deep mining; underground mining | |||
|
exploitation souterraine : 13 a las frases, 5 temas |
| Ambiente | 2 |
| Carbón | 4 |
| Ciencias de la vida | 1 |
| Construcción | 2 |
| Metalurgia | 4 |