 |
| |||
| señales de retorno | |||
| |||
| señal de retorno | |||
|
return signals : 4 phrases in 4 subjects |
| Communications | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Telegraphy | 1 |
|
| |||
| señales de retorno | |||
| |||
| señal de retorno | |||
|
return signals : 4 phrases in 4 subjects |
| Communications | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Telegraphy | 1 |