| |||
| class 4/5 system; combined exchange; combined local/toll system; combined local/transit exchange; combined system | |||
|
central combinada : 6 phrases in 4 subjects |
| Communications | 2 |
| Electronics | 1 |
| Environment | 1 |
| Materials science | 2 |
| |||
| class 4/5 system; combined exchange; combined local/toll system; combined local/transit exchange; combined system | |||
|
central combinada : 6 phrases in 4 subjects |
| Communications | 2 |
| Electronics | 1 |
| Environment | 1 |
| Materials science | 2 |