 |
| |||
| motor à prova de explosão | |||
| antideflagrante: 9 phrases in 5 subjects |
| Accumulators | 1 |
| Electronics | 1 |
| Lighting other than cinema | 1 |
| Mechanic engineering | 5 |
| Telephony | 1 |
|
| |||
| motor à prova de explosão | |||
| antideflagrante: 9 phrases in 5 subjects |
| Accumulators | 1 |
| Electronics | 1 |
| Lighting other than cinema | 1 |
| Mechanic engineering | 5 |
| Telephony | 1 |