 |
| colector: 68 phrases in 17 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Communications | 2 |
| Earth sciences | 3 |
| Electric motors | 6 |
| Electric traction | 5 |
| Electronics | 16 |
| Environment | 5 |
| Industry | 4 |
| Life sciences | 1 |
| Mechanic engineering | 11 |
| Radio | 1 |
| Semiconductors | 3 |
| Telegraphy | 1 |
| Transport | 6 |
| Vacuum tubes | 1 |
| Wind Energy | 1 |