 |
| |||
| arc | |||
| el arco: 15 phrases in 7 subjects |
| Agriculture | 1 |
| Antennas and waveguides | 1 |
| Electronics | 4 |
| General | 1 |
| Metallurgy | 3 |
| Technology | 4 |
| Vacuum tubes | 1 |
|
| |||
| arc | |||
| el arco: 15 phrases in 7 subjects |
| Agriculture | 1 |
| Antennas and waveguides | 1 |
| Electronics | 4 |
| General | 1 |
| Metallurgy | 3 |
| Technology | 4 |
| Vacuum tubes | 1 |