 |
| |||
| signal de différence de couleur | |||
|
diferencia de color : 13 phrases in 5 subjects |
| Communications | 6 |
| Earth sciences | 1 |
| Electronics | 1 |
| Lighting other than cinema | 4 |
| Metallurgy | 1 |
|
| |||
| signal de différence de couleur | |||
|
diferencia de color : 13 phrases in 5 subjects |
| Communications | 6 |
| Earth sciences | 1 |
| Electronics | 1 |
| Lighting other than cinema | 4 |
| Metallurgy | 1 |