 |
|
bubble-column : 32 phrases in 13 subjects |
| Biotechnology | 2 |
| Chemistry | 1 |
| Ecology | 1 |
| Immunology | 1 |
| Makarov | 1 |
| Metallurgy | 2 |
| Mining | 3 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 3 |
| Oil and gas | 1 |
| Oil processing plants | 2 |
| Physics | 1 |
| Technology | 13 |