 |
| pusher: 76 phrases in 18 subjects |
| Agriculture | 4 |
| Artillery | 2 |
| Astronautics | 1 |
| Coal | 7 |
| Communications | 1 |
| Drilling | 1 |
| Electric traction | 1 |
| General | 1 |
| Industry | 15 |
| Law | 1 |
| Life sciences | 1 |
| Mechanic engineering | 5 |
| Metallurgy | 7 |
| Municipal planning | 1 |
| Nautical | 1 |
| Social science | 2 |
| Technology | 2 |
| Transport | 23 |