 |
|
push- pull : 32 phrases in 13 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Communications | 8 |
| Earth sciences | 1 |
| Electrical engineering | 1 |
| Electronics | 8 |
| Immigration and citizenship | 1 |
| Information technology | 2 |
| Materials science | 1 |
| Mechanic engineering | 5 |
| Metallurgy | 1 |
| Politics | 1 |
| Transport | 1 |