 |
| |||
| ambient air standard | |||
| предельно допустимая концентрация в воздухе вредного вещества: 5 phrases in 4 subjects |
| Ecology | 1 |
| Occupational health & safety | 1 |
| Oil and gas | 1 |
| Weapons of mass destruction | 2 |
|
| |||
| ambient air standard | |||
| предельно допустимая концентрация в воздухе вредного вещества: 5 phrases in 4 subjects |
| Ecology | 1 |
| Occupational health & safety | 1 |
| Oil and gas | 1 |
| Weapons of mass destruction | 2 |