 |
| |||
| tower system (производства серной кислоты) | |||
| tower system | |||
| башенная система: 8 phrases in 4 subjects |
| Energy industry | 1 |
| Forestry | 2 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 4 |
|
| |||
| tower system (производства серной кислоты) | |||
| tower system | |||
| башенная система: 8 phrases in 4 subjects |
| Energy industry | 1 |
| Forestry | 2 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 4 |