 |
| |||
| segnale differenza di colore | |||
|
diferencia de color : 10 phrases in 4 subjects |
| Communications | 4 |
| Electronics | 1 |
| Lighting other than cinema | 4 |
| Metallurgy | 1 |
|
| |||
| segnale differenza di colore | |||
|
diferencia de color : 10 phrases in 4 subjects |
| Communications | 4 |
| Electronics | 1 |
| Lighting other than cinema | 4 |
| Metallurgy | 1 |