| |||
| travail au chalumeau; soufflage du verre | |||
| |||
| travail au chalumeau; soufflage du verre | |||
|
lamp-working : 5 phrases in 3 subjects |
| Chemistry | 1 |
| Electronics | 3 |
| Lighting other than cinema | 1 |
| |||
| travail au chalumeau; soufflage du verre | |||
| |||
| travail au chalumeau; soufflage du verre | |||
|
lamp-working : 5 phrases in 3 subjects |
| Chemistry | 1 |
| Electronics | 3 |
| Lighting other than cinema | 1 |