| |||
método de Ramspol | |||
sistema misto; sistema combinado |
combined system : 21 phrases in 9 subjects |
Communications | 4 |
Earth sciences | 1 |
Electric traction | 2 |
Energy industry | 2 |
Environment | 7 |
Industry | 1 |
Mechanic engineering | 1 |
Technology | 2 |
Transport | 1 |