|
protective cover : 10 phrases in 8 subjects |
| Construction | 1 |
| General | 1 |
| Industry | 1 |
| Labor law | 1 |
| Materials science | 1 |
| Natural resourses and wildlife conservation | 1 |
| Optics branch of physics | 1 |
| Technology | 3 |
|
protective cover : 10 phrases in 8 subjects |
| Construction | 1 |
| General | 1 |
| Industry | 1 |
| Labor law | 1 |
| Materials science | 1 |
| Natural resourses and wildlife conservation | 1 |
| Optics branch of physics | 1 |
| Technology | 3 |