 |
| protection cover: 29 phrases in 14 subjects |
| Astronautics | 7 |
| Building materials | 1 |
| Cables and cable production | 3 |
| Construction | 1 |
| Electronics | 1 |
| Firefighting and fire-control systems | 1 |
| Insurance | 1 |
| Mass media | 1 |
| Military | 3 |
| Polygraphy | 1 |
| Road construction | 1 |
| Security systems | 1 |
| Technology | 5 |
| Weapons of mass destruction | 2 |